diff --git a/mix/AppContext.cpp b/mix/AppContext.cpp
index fb44a1cde..8ffa0f6dd 100644
--- a/mix/AppContext.cpp
+++ b/mix/AppContext.cpp
@@ -71,6 +71,11 @@ void AppContext::load()
 	m_applicationEngine->rootContext()->setContextProperty("fileIo", m_fileIo.get());
 	qmlRegisterType<QEther>("org.ethereum.qml.QEther", 1, 0, "QEther");
 	qmlRegisterType<QBigInt>("org.ethereum.qml.QBigInt", 1, 0, "QBigInt");
+	//qmlRegisterType<QVariableDefinition>("org.ethereum.qml.QVariableDefinition", 1, 0, "QVariableDefinition");
+	qmlRegisterType<QIntType>("org.ethereum.qml.QIntType", 1, 0, "QIntType");
+	qmlRegisterType<QRealType>("org.ethereum.qml.QRealType", 1, 0, "QRealType");
+	qmlRegisterType<QStringType>("org.ethereum.qml.QStringType", 1, 0, "QStringType");
+	qmlRegisterType<QHashType>("org.ethereum.qml.QHashType", 1, 0, "QHashType");
 	QQmlComponent projectModelComponent(m_applicationEngine, QUrl("qrc:/qml/ProjectModel.qml"));
 	QObject* projectModel = projectModelComponent.create();
 	if (projectModelComponent.isError())
diff --git a/mix/ClientModel.cpp b/mix/ClientModel.cpp
index eb61c8554..7f9a37aad 100644
--- a/mix/ClientModel.cpp
+++ b/mix/ClientModel.cpp
@@ -42,6 +42,10 @@ ClientModel::ClientModel(AppContext* _context):
 	m_context(_context), m_running(false)
 {
 	qRegisterMetaType<QBigInt*>("QBigInt*");
+	qRegisterMetaType<QIntType*>("QIntType*");
+	qRegisterMetaType<QStringType*>("QStringType*");
+	qRegisterMetaType<QRealType*>("QRealType*");
+	qRegisterMetaType<QHashType*>("QHashType*");
 	qRegisterMetaType<QEther*>("QEther*");
 	qRegisterMetaType<QVariableDefinition*>("QVariableDefinition*");
 	qRegisterMetaType<QVariableDefinitionList*>("QVariableDefinitionList*");
@@ -80,8 +84,10 @@ void ClientModel::debugState(QVariantMap _state)
 		TransactionSettings transactionSettings(functionId, value, gas, gasPrice);
 
 		for (auto p = params.cbegin(); p != params.cend(); ++p)
-			transactionSettings.parameterValues.insert(std::make_pair(p.key(), (qvariant_cast<QEther*>(p.value()))->toU256Wei()));
-
+		{
+			QVariableDefinition* param = qvariant_cast<QVariableDefinition*>(p.value());
+			transactionSettings.parameterValues.push_back(param);
+		}
 		transactionSequence.push_back(transactionSettings);
 	}
 	executeSequence(transactionSequence, balance);
@@ -123,15 +129,8 @@ void ClientModel::executeSequence(std::vector<TransactionSettings> const& _seque
 					throw std::runtime_error("function " + t.functionId.toStdString() + " not found");
 
 				c.encode(f);
-				for (int p = 0; p < f->parametersList().size(); p++)
-				{
-					QVariableDeclaration* var = (QVariableDeclaration*)f->parametersList().at(p);
-					u256 value = 0;
-					auto v = t.parameterValues.find(var->name());
-					if (v != t.parameterValues.cend())
-						value = v->second;
-					c.encode(var, value);
-				}
+				for (int p = 0; p < t.parameterValues.size(); p++)
+					c.push(t.parameterValues.at(p)->encodeValue());
 				transactonData.emplace_back(c.encodedData());
 			}
 
diff --git a/mix/ClientModel.h b/mix/ClientModel.h
index 0e7f9c092..5170fcde3 100644
--- a/mix/ClientModel.h
+++ b/mix/ClientModel.h
@@ -54,7 +54,7 @@ struct TransactionSettings
 	/// Gas price
 	u256 gasPrice;
 	/// Mapping from contract function parameter name to value
-	std::map<QString, u256> parameterValues;
+	QList<QVariableDefinition*> parameterValues;
 };
 
 
diff --git a/mix/ContractCallDataEncoder.cpp b/mix/ContractCallDataEncoder.cpp
index 7a38db22b..e3dcf9abb 100644
--- a/mix/ContractCallDataEncoder.cpp
+++ b/mix/ContractCallDataEncoder.cpp
@@ -44,26 +44,9 @@ void ContractCallDataEncoder::encode(QFunctionDefinition const* _function)
 	m_encodedData.insert(m_encodedData.end(), hash.begin(), hash.end());
 }
 
-void ContractCallDataEncoder::encode(QVariableDeclaration const* _dec, bool _value)
+void ContractCallDataEncoder::push(bytes _b)
 {
-	return encode(_dec, QString(formatBool(_value)));
-}
-
-void ContractCallDataEncoder::encode(QVariableDeclaration const* _dec, QString _value)
-{
-	int padding = this->padding(_dec->type());
-	bytes data = padded(jsToBytes(_value.toStdString()), padding);
-	m_encodedData.insert(m_encodedData.end(), data.begin(), data.end());
-}
-
-void ContractCallDataEncoder::encode(QVariableDeclaration const* _dec, u256 _value)
-{
-	int padding = this->padding(_dec->type());
-	std::ostringstream s;
-	s << std::hex << "0x" << _value;
-	bytes data = padded(jsToBytes(s.str()), padding);
-	m_encodedData.insert(m_encodedData.end(), data.begin(), data.end());
-	encodedData();
+	m_encodedData.insert(m_encodedData.end(), _b.begin(), _b.end());
 }
 
 QList<QVariableDefinition*> ContractCallDataEncoder::decode(QList<QVariableDeclaration*> _returnParameters, bytes _value)
@@ -74,37 +57,79 @@ QList<QVariableDefinition*> ContractCallDataEncoder::decode(QList<QVariableDecla
 	for (int k = 0; k <_returnParameters.length(); k++)
 	{
 		QVariableDeclaration* dec = (QVariableDeclaration*)_returnParameters.at(k);
-		int padding = this->padding(dec->type());
-		std::string rawParam = returnValue.substr(0, padding * 2);
-		r.append(new QVariableDefinition(dec, convertToReadable(unpadLeft(rawParam), dec)));
-		returnValue = returnValue.substr(rawParam.length(), returnValue.length() - 1);
+		QVariableDefinition* def = nullptr;
+		if (dec->type().contains("int"))
+			def = new QIntType(dec, QString());
+		else if (dec->type().contains("real"))
+			def = new QRealType(dec, QString());
+		else if (dec->type().contains("string") || dec->type().contains("text"))
+			def = new QStringType(dec, QString());
+		else if (dec->type().contains("hash") || dec->type().contains("address"))
+			def = new QHashType(dec, QString());
+
+		def->decodeValue(returnValue);
+		r.push_back(def);
+		returnValue = returnValue.substr(def->length(), returnValue.length() - 1);
+
+		/*QStringList tLength = typeLength(dec->type());
+
+		QRegExp intTest("(uint|int|hash|address)");
+		QRegExp stringTest("(string|text)");
+		QRegExp realTest("(real|ureal)");
+		if (intTest.indexIn(dec->type()) != -1)
+		{
+			std::string rawParam = returnValue.substr(0, (tLength.first().toInt() / 8) * 2);
+			QString value = resolveNumber(QString::fromStdString(rawParam));
+			r.append(new QVariableDefinition(dec, value));
+			returnValue = returnValue.substr(rawParam.length(), returnValue.length() - 1);
+		}
+		else if (dec->type() == "bool")
+		{
+			std::string rawParam = returnValue.substr(0, 2);
+			std::string unpadded = unpadLeft(rawParam);
+			r.append(new QVariableDefinition(dec, QString::fromStdString(unpadded)));
+			returnValue = returnValue.substr(rawParam.length(), returnValue.length() - 1);
+		}
+		else if (stringTest.indexIn(dec->type()) != -1)
+		{
+			if (tLength.length() == 0)
+			{
+				QString strLength = QString::fromStdString(returnValue.substr(0, 2));
+				returnValue = returnValue.substr(2, returnValue.length() - 1);
+				QString strValue = QString::fromStdString(returnValue.substr(0, strLength.toInt()));
+				r.append(new QVariableDefinition(dec, strValue));
+				returnValue = returnValue.substr(strValue.length(), returnValue.length() - 1);
+			}
+			else
+			{
+				std::string rawParam = returnValue.substr(0, (tLength.first().toInt() / 8) * 2);
+				r.append(new QVariableDefinition(dec, QString::fromStdString(rawParam)));
+				returnValue = returnValue.substr(rawParam.length(), returnValue.length() - 1);
+			}
+		}
+		else if (realTest.indexIn(dec->type()) != -1)
+		{
+			QString value;
+			for (QString str: tLength)
+			{
+				std::string rawParam = returnValue.substr(0, (str.toInt() / 8) * 2);
+				QString value = resolveNumber(QString::fromStdString(rawParam));
+				value += value + "x";
+				returnValue = returnValue.substr(rawParam.length(), returnValue.length() - 1);
+			}
+			r.append(new QVariableDefinition(dec, value));
+		}*/
 	}
 	return r;
 }
 
-int ContractCallDataEncoder::padding(QString type)
-{
-	// TODO : to be improved (load types automatically from solidity library).
-	if (type.indexOf("uint") != -1)
-		return integerPadding(type.remove("uint").toInt());
-	else if (type.indexOf("int") != -1)
-		return integerPadding(type.remove("int").toInt());
-	else if (type.indexOf("bool") != -1)
-		return 1;
-	else if ((type.indexOf("address") != -1))
-		return 32;
-	else
-		return 0;
-}
-
-int ContractCallDataEncoder::integerPadding(int bitValue)
-{
-	return bitValue / 8;
-}
-
-QString ContractCallDataEncoder::formatBool(bool _value)
+QString ContractCallDataEncoder::resolveNumber(QString const& _rawParam)
 {
-	return (_value ? "1" : "0");
+	std::string unPadded = unpadLeft(_rawParam.toStdString());
+	int x = std::stol(unPadded, nullptr, 16);
+	std::stringstream ss;
+	ss << std::dec << x;
+	return QString::fromStdString(ss.str());
 }
 
 QString ContractCallDataEncoder::convertToReadable(std::string _v, QVariableDeclaration* _dec)
diff --git a/mix/ContractCallDataEncoder.h b/mix/ContractCallDataEncoder.h
index 49410a7cd..f92b25902 100644
--- a/mix/ContractCallDataEncoder.h
+++ b/mix/ContractCallDataEncoder.h
@@ -42,9 +42,9 @@ class ContractCallDataEncoder
 public:
 	ContractCallDataEncoder() {}
 	/// Encode variable in order to be sent as parameter.
-	void encode(QVariableDeclaration const* _dec, QString _value);
+	void encode(QVariableDeclaration const* _dec, QString _baseType, QStringList _length, QString _value);
 	/// Encode variable in order to be sent as parameter.
-	void encode(QVariableDeclaration const* _dec, u256 _value);
+	void encode(QVariableDeclaration const* _dec, QString _value);
 	/// Encode variable in order to be sent as parameter.
 	void encode(QVariableDeclaration const* _dec, bool _value);
 	/// Encode hash of the function to call.
@@ -53,15 +53,21 @@ public:
 	QList<QVariableDefinition*> decode(QList<QVariableDeclaration*> _dec, bytes _value);
 	/// Get all encoded data encoded by encode function.
 	bytes encodedData();
+	/// Encode the given list of parameters (@a _p)
+	void encode(QVariableDefinition const* _dec);
+	/// Push the given @ _b to the current stored bytes.
+	void push(bytes _b);
 
 private:
-	int padding(QString _type);
+	//int padding(QString _type);
 	bytes m_encodedData;
+	static bytes encodeNumber(QString _value, QString _length);
 	static QString convertToReadable(std::string _v, QVariableDeclaration* _dec);
 	static QString convertToBool(std::string _v);
 	static QString convertToInt(std::string _v);
 	static int integerPadding(int _bitValue);
 	static QString formatBool(bool _value);
+	static QString resolveNumber(QString const& _rawParams);
 };
 
 }
diff --git a/mix/QBigInt.h b/mix/QBigInt.h
index 842b86c7d..e68b92259 100644
--- a/mix/QBigInt.h
+++ b/mix/QBigInt.h
@@ -28,6 +28,7 @@
 #include <QQmlEngine>
 #include <libdevcore/CommonJS.h>
 #include <libdevcore/Common.h>
+#include "QVariableDefinition.h"
 
 using namespace dev;
 
diff --git a/mix/QFunctionDefinition.cpp b/mix/QFunctionDefinition.cpp
index 97ce0ff58..1630ffe83 100644
--- a/mix/QFunctionDefinition.cpp
+++ b/mix/QFunctionDefinition.cpp
@@ -33,6 +33,8 @@ QFunctionDefinition::QFunctionDefinition(dev::solidity::FunctionDefinition const
 	for (unsigned i = 0; i < parameters.size(); i++)
 		m_parameters.append(new QVariableDeclaration(parameters.at(i).get()));
 
+
+
 	std::vector<std::shared_ptr<VariableDeclaration>> returnParameters = _f->getReturnParameters();
 	for (unsigned i = 0; i < returnParameters.size(); i++)
 		m_returnParameters.append(new QVariableDeclaration(returnParameters.at(i).get()));
diff --git a/mix/QVariableDeclaration.h b/mix/QVariableDeclaration.h
index 966ee0ff3..78f97994f 100644
--- a/mix/QVariableDeclaration.h
+++ b/mix/QVariableDeclaration.h
@@ -19,6 +19,7 @@
  * @date 2014
  */
 
+#include <QStringList>
 #include <libsolidity/AST.h>
 #include "QBasicNodeDefinition.h"
 
@@ -37,7 +38,15 @@ class QVariableDeclaration: public QBasicNodeDefinition
 public:
 	QVariableDeclaration() {}
 	QVariableDeclaration(solidity::VariableDeclaration const* _v): QBasicNodeDefinition(_v), m_type(QString::fromStdString(_v->getType()->toString())) {}
-	QString type() const { return m_type; }
+	Q_INVOKABLE QString type() const { return m_type; }
+	QStringList typeLength()
+	{
+		QRegExp rules("\\d");
+		int pos = 0;
+		while ((pos = rules.indexIn(m_type, pos)) != -1) {}
+		return rules.capturedTexts();
+	}
+
 private:
 	QString m_type;
 };
diff --git a/mix/QVariableDefinition.cpp b/mix/QVariableDefinition.cpp
index 4f38e84b2..3ac036222 100644
--- a/mix/QVariableDefinition.cpp
+++ b/mix/QVariableDefinition.cpp
@@ -19,6 +19,7 @@
  * @date 2014
  */
 
+#include <libdevcore/CommonJS.h>
 #include "QVariableDefinition.h"
 
 using namespace dev::mix;
@@ -53,3 +54,132 @@ QVariableDefinition* QVariableDefinitionList::val(int _idx)
 		return nullptr;
 	return m_def.at(_idx);
 }
+
+/*
+ * QIntType
+ */
+dev::bytes QIntType::encodeValue()
+{
+	std::ostringstream s;
+	s << std::hex << "0x" << value().toStdString();
+	return padded(jsToBytes(s.str()), declaration()->typeLength().first().toInt() / 8);
+}
+
+int QIntType::length()
+{
+	return (declaration()->typeLength().first().toInt() / 8) * 2;
+}
+
+void QIntType::decodeValue(std::string const& _rawValue)
+{
+	std::string unPadded = unpadLeft(_rawValue);
+	int x = std::stol(unPadded, nullptr, 16);
+	std::stringstream ss;
+	ss << std::dec << x;
+	setValue(QString::fromStdString(ss.str()));
+}
+
+/*
+ * QHashType
+ */
+dev::bytes QHashType::encodeValue()
+{
+	return bytes();
+}
+
+int QHashType::length()
+{
+	return (declaration()->typeLength().first().toInt() / 8) * 2;
+}
+
+void QHashType::decodeValue(std::string const& _rawValue)
+{
+	Q_UNUSED(_rawValue);
+}
+
+/*
+ * QRealType
+ */
+dev::bytes QRealType::encodeValue()
+{
+
+	std::ostringstream s;
+	s << std::hex << "0x" << value().split("x").first().toStdString();
+	bytes first = padded(jsToBytes(s.str()), declaration()->typeLength().first().toInt() / 8);
+	s << std::hex << "0x" << value().split("x").last().toStdString();
+	bytes second = padded(jsToBytes(s.str()), declaration()->typeLength().last().toInt() / 8);
+	first.insert(first.end(), second.begin(), second.end());
+	return first;
+}
+
+int QRealType::length()
+{
+	return (declaration()->typeLength().first().toInt() / 8) * 2 + (declaration()->typeLength().last().toInt() / 8) * 2;
+}
+
+void QRealType::decodeValue(std::string const& _rawValue)
+{
+	QString value;
+	for (QString str: declaration()->typeLength())
+	{
+		std::string rawParam = _rawValue.substr(0, (str.toInt() / 8) * 2);
+		std::string unPadded = unpadLeft(rawParam);
+		int x = std::stol(unPadded, nullptr, 16);
+		std::stringstream ss;
+		ss << std::dec << x;
+		value += QString::fromStdString(ss.str()) + "x";
+	}
+	setValue(value);
+}
+
+/*
+ * QStringType
+ */
+dev::bytes QStringType::encodeValue()
+{
+	return padded(jsToBytes(value().toStdString()), declaration()->typeLength().first().toInt() / 8);
+}
+
+int QStringType::length()
+{
+	if (declaration()->typeLength().length() == 0)
+		return value().length() + 2;
+	else
+		return (declaration()->typeLength().first().toInt() / 8) * 2;
+}
+
+void QStringType::decodeValue(std::string const& _rawValue)
+{
+	if (declaration()->typeLength().first().length() == 0)
+	{
+		std::string strLength = _rawValue.substr(0, 2);
+		std::string strValue = _rawValue.substr(2, std::stoi(strLength));
+		setValue(QString::fromStdString(strValue));
+	}
+	else
+	{
+		std::string rawParam = _rawValue.substr(0, (declaration()->typeLength().first().toInt() / 8) * 2);
+		setValue(QString::fromStdString(rawParam));
+	}
+}
+
+/*
+ * QBoolType
+ */
+dev::bytes QBoolType::encodeValue()
+{
+	return padded(jsToBytes(value().toStdString()), 1);
+}
+
+int QBoolType::length()
+{
+	return 1;
+}
+
+void QBoolType::decodeValue(std::string const& _rawValue)
+{
+	std::string rawParam = _rawValue.substr(0, 2);
+	std::string unpadded = unpadLeft(rawParam);
+	setValue(QString::fromStdString(unpadded));
+}
+
diff --git a/mix/QVariableDefinition.h b/mix/QVariableDefinition.h
index f55e51346..6f90e1da5 100644
--- a/mix/QVariableDefinition.h
+++ b/mix/QVariableDefinition.h
@@ -37,12 +37,18 @@ class QVariableDefinition: public QObject
 	Q_PROPERTY(QVariableDeclaration* declaration READ declaration CONSTANT)
 
 public:
+	QVariableDefinition() {}
 	QVariableDefinition(QVariableDeclaration* _def, QString _value): QObject(), m_value(_value), m_dec(_def) {}
 
 	/// Return the associated declaration of this variable definition.
-	QVariableDeclaration* declaration() const { return m_dec; }
+	Q_INVOKABLE QVariableDeclaration* declaration() const { return m_dec; }
 	/// Return the variable value.
 	QString value() const { return m_value; }
+	Q_INVOKABLE void setValue(QString _value) { m_value = _value; }
+	Q_INVOKABLE void setDeclaration(QVariableDeclaration* _dec) { m_dec = _dec; }
+	virtual bytes encodeValue() = 0;
+	virtual void decodeValue(std::string const& _rawValue) = 0;
+	virtual int length() = 0;
 
 private:
 	QString m_value;
@@ -67,7 +73,71 @@ private:
 	QList<QVariableDefinition*> m_def;
 };
 
+class QIntType: public QVariableDefinition
+{
+	Q_OBJECT
+
+public:
+	QIntType() {}
+	QIntType(QVariableDeclaration* _def, QString _value): QVariableDefinition(_def, _value) {}
+	dev::bytes encodeValue() override;
+	void decodeValue(std::string const& _rawValue) override;
+	int length() override;
+};
+
+class QRealType: public QVariableDefinition
+{
+	Q_OBJECT
+
+public:
+	QRealType() {}
+	QRealType(QVariableDeclaration* _def, QString _value): QVariableDefinition(_def, _value) {}
+	dev::bytes encodeValue() override;
+	void decodeValue(std::string const& _rawValue) override;
+	int length() override;
+};
+
+class QStringType: public QVariableDefinition
+{
+	Q_OBJECT
+
+public:
+	QStringType() {}
+	QStringType(QVariableDeclaration* _def, QString _value): QVariableDefinition(_def, _value) {}
+	dev::bytes encodeValue() override;
+	void decodeValue(std::string const& _rawValue) override;
+	int length() override;
+};
+
+class QHashType: public QVariableDefinition
+{
+	Q_OBJECT
+
+public:
+	QHashType() {}
+	QHashType(QVariableDeclaration* _def, QString _value): QVariableDefinition(_def, _value) {}
+	dev::bytes encodeValue() override;
+	void decodeValue(std::string const& _rawValue) override;
+	int length() override;
+};
+
+class QBoolType: public QVariableDefinition
+{
+	Q_OBJECT
+
+public:
+	QBoolType() {}
+	QBoolType(QVariableDeclaration* _def, QString _value): QVariableDefinition(_def, _value) {}
+	dev::bytes encodeValue() override;
+	void decodeValue(std::string const& _rawValue) override;
+	int length() override;
+};
+
 }
 }
 
-Q_DECLARE_METATYPE(dev::mix::QVariableDefinition*)
+//Q_DECLARE_METATYPE(dev::mix::QVariableDefinition*)
+Q_DECLARE_METATYPE(dev::mix::QIntType*)
+Q_DECLARE_METATYPE(dev::mix::QStringType*)
+Q_DECLARE_METATYPE(dev::mix::QHashType*)
+Q_DECLARE_METATYPE(dev::mix::QBoolType*)
diff --git a/mix/qml.qrc b/mix/qml.qrc
index 169d1ebcb..fecea2e2c 100644
--- a/mix/qml.qrc
+++ b/mix/qml.qrc
@@ -43,5 +43,10 @@
         <file>qml/Ether.qml</file>
         <file>qml/EtherValue.qml</file>
         <file>qml/BigIntValue.qml</file>
+        <file>qml/QVariableDefinition.qml</file>
+        <file>qml/QBoolType.qml</file>
+        <file>qml/QHashType.qml</file>
+        <file>qml/QIntType.qml</file>
+        <file>qml/QRealType.qml</file>
     </qresource>
 </RCC>
diff --git a/mix/qml/QBoolType.qml b/mix/qml/QBoolType.qml
new file mode 100644
index 000000000..a6dc54035
--- /dev/null
+++ b/mix/qml/QBoolType.qml
@@ -0,0 +1,8 @@
+import QtQuick 2.0
+import org.ethereum.qml.QBoolType 1.0
+
+QBoolType
+{
+	property string view: "qrc:/qml/QBoolTypeView.qml"
+}
+
diff --git a/mix/qml/QHashType.qml b/mix/qml/QHashType.qml
new file mode 100644
index 000000000..a7913d414
--- /dev/null
+++ b/mix/qml/QHashType.qml
@@ -0,0 +1,8 @@
+import QtQuick 2.0
+import org.ethereum.qml.QHashType 1.0
+
+QHashType
+{
+	property string view: "qrc:/qml/QHashTypeView.qml"
+}
+
diff --git a/mix/qml/QIntType.qml b/mix/qml/QIntType.qml
new file mode 100644
index 000000000..7533d367f
--- /dev/null
+++ b/mix/qml/QIntType.qml
@@ -0,0 +1,8 @@
+import QtQuick 2.0
+import org.ethereum.qml.QIntType 1.0
+
+QIntType
+{
+	property string view: "qrc:/qml/QIntTypeView.qml"
+}
+
diff --git a/mix/qml/QRealType.qml b/mix/qml/QRealType.qml
new file mode 100644
index 000000000..ba3cf82bf
--- /dev/null
+++ b/mix/qml/QRealType.qml
@@ -0,0 +1,8 @@
+import QtQuick 2.0
+import org.ethereum.qml.QRealType 1.0
+
+QRealType
+{
+	property string view: "qrc:/qml/QRealTypeView.qml"
+}
+
diff --git a/mix/qml/QVariableDefinition.qml b/mix/qml/QVariableDefinition.qml
new file mode 100644
index 000000000..af0cd4ea0
--- /dev/null
+++ b/mix/qml/QVariableDefinition.qml
@@ -0,0 +1,13 @@
+/*
+ * Used to instanciate a QVariableDefinition obj using Qt.createComponent function.
+*/
+import QtQuick 2.2
+import QtQuick.Controls 1.1
+import QtQuick.Layouts 1.1
+import QtQuick.Controls.Styles 1.1
+import org.ethereum.qml.QVariableDefinition 1.0
+
+QVariableDefinition
+{
+	id: qVariableDefinition
+}
diff --git a/mix/qml/TransactionDialog.qml b/mix/qml/TransactionDialog.qml
index 22995d66b..eb9fd5914 100644
--- a/mix/qml/TransactionDialog.qml
+++ b/mix/qml/TransactionDialog.qml
@@ -28,6 +28,8 @@ Window {
 		valueField.value = item.value;
 		var functionId = item.functionId;
 		itemParams = item.parameters !== undefined ? item.parameters : {};
+		console.log("opening ...");
+		console.log(JSON.stringify(itemParams));
 		functionsModel.clear();
 		var functionIndex = -1;
 		var functions = codeModel.code.contract.functions;
@@ -41,21 +43,48 @@ Window {
 			functionIndex = 0; //@todo suggest unused funtion
 
 		functionComboBox.currentIndex = functionIndex;
+		console.log("opening2 ...");
+		console.log(JSON.stringify(itemParams));
 		loadParameters();
 		visible = true;
 		valueField.focus = true;
 	}
 
 	function loadParameters() {
+		console.log("opening3 ...");
+		console.log(JSON.stringify(itemParams));
 		if (!paramsModel)
 			return;
+		console.log("opening4 ...");
+		console.log(JSON.stringify(itemParams));
 		paramsModel.clear();
+		console.log("opening5 ...");
+		console.log(JSON.stringify(itemParams));
 		if (functionComboBox.currentIndex >= 0 && functionComboBox.currentIndex < functionsModel.count) {
 			var func = codeModel.code.contract.functions[functionComboBox.currentIndex];
 			var parameters = func.parameters;
 			for (var p = 0; p < parameters.length; p++) {
 				var pname = parameters[p].name;
-				paramsModel.append({ name: pname, type: parameters[p].type, value: itemParams[pname] !== undefined ? itemParams[pname].value() : "" });
+				var varComponent;
+				var type = parameters[p].type;
+				console.log("type : " + type);
+				console.log("name : " + pname);
+				if (type.indexOf("int") !== -1)
+					varComponent = Qt.createComponent("qrc:/qml/QIntType.qml");
+				else if (type.indexOf("real") !== -1)
+					varComponent = Qt.createComponent("qrc:/qml/QRealType.qml");
+				else if (type.indexOf("string") !== -1 || type.indexOf("text") !== -1)
+					varComponent = Qt.createComponent("qrc:/qml/QStringType.qml");
+				else if (type.indexOf("hash") !== -1 || type.indexOf("address") !== -1)
+					varComponent = Qt.createComponent("qrc:/qml/QHashType.qml");
+				var param = varComponent.createObject(modalTransactionDialog);
+				var value = itemParams[pname] !== undefined ? itemParams[pname].value : "";
+
+				console.log("loading parameters");
+				console.log(JSON.stringify(itemParams));
+				param.setValue(value);
+				param.setDeclaration(parameters[p]);
+				paramsModel.append({ internalValue: param, name: pname, type: parameters[p].type, value: itemParams[pname] !== undefined ? itemParams[pname].value : "" });
 			}
 		}
 	}
@@ -76,11 +105,16 @@ Window {
 		}
 		for (var p = 0; p < transactionDialog.transactionParams.count; p++) {
 			var parameter = transactionDialog.transactionParams.get(p);
-			var intComponent = Qt.createComponent("qrc:/qml/BigIntValue.qml");
-			var param = intComponent.createObject(modalTransactionDialog);
-			param.setValue(parameter.value);
-			item.parameters[parameter.name] = param;
+			//var intComponent = Qt.createComponent("qrc:/qml/BigIntValue.qml");
+			//var param = intComponent.createObject(modalTransactionDialog);
+			//param.setValue(parameter.value);
+			//parameter.internalValue.setValue(parameter.value);
+			console.log("onget");
+			console.log(JSON.stringify(parameter));
+			item.parameters[parameter.name] = parameter;
 		}
+		console.log("return item");
+		console.log(JSON.stringify(item));
 		return item;
 	}