diff --git a/mix/ContractCallDataEncoder.cpp b/mix/ContractCallDataEncoder.cpp
index 8f5f3ecc7..e67ce9cea 100644
--- a/mix/ContractCallDataEncoder.cpp
+++ b/mix/ContractCallDataEncoder.cpp
@@ -80,10 +80,7 @@ void ContractCallDataEncoder::encodeArray(QJsonArray const& _array, QList<int> _
 		if (c.isArray())
 		{
 			if (_dim[0] == -1)
-			{
-				m_dynamicOffsetMap.push_back(std::make_pair(m_dynamicData.size() + offsetStart + 32 + k * 32,
-															m_dynamicData.size() + _content.size()));
-			}
+				m_dynamicOffsetMap.push_back(std::make_pair(m_dynamicData.size() + offsetStart + 32 + k * 32, m_dynamicData.size() + _content.size()));
 			encodeArray(c.toArray(), _dim, _type, _content);
 		}
 		else
@@ -183,6 +180,11 @@ unsigned ContractCallDataEncoder::encodeSingleItem(QString const& _data, Solidit
 		catch (std::exception const&)
 		{
 			// manage input as a string.
+			QRegExp strExtract("\"(.*)\""); //check if contains both string and hex value, keep the string.
+			int i = strExtract.indexIn(src);
+			if (i != -1)
+				src = strExtract.cap(0);
+			src = src.replace("\"", "");
 			result = encodeStringParam(src, alignSize);
 		}
 	}
@@ -249,7 +251,11 @@ dev::bytes ContractCallDataEncoder::decodeBytes(dev::bytes const& _rawValue)
 
 QString ContractCallDataEncoder::toString(dev::bytes const& _b)
 {
-	return QString::fromStdString(dev::toJS(_b));
+	QString str;
+	if (asString(_b, str))
+		return  "\"" + str +  "\" " + QString::fromStdString(dev::toJS(_b));
+	else
+		return QString::fromStdString(dev::toJS(_b));
 }
 
 QString ContractCallDataEncoder::toChar(dev::bytes const& _b)
diff --git a/mix/qml/QStringTypeView.qml b/mix/qml/QStringTypeView.qml
index 080c49282..101863421 100644
--- a/mix/qml/QStringTypeView.qml
+++ b/mix/qml/QStringTypeView.qml
@@ -2,11 +2,15 @@ import QtQuick 2.0
 
 Item
 {
-	property alias value: textinput.text
+	property string value
 	property alias readOnly: textinput.readOnly
 	id: editRoot
 	height: 20
 	width: readOnly ? textinput.implicitWidth : 150
+	onValueChanged:
+	{
+		 textinput.text = value
+	}
 
 	SourceSansProBold
 	{
@@ -18,12 +22,19 @@ Item
 		radius: 4
 		TextInput {
 			id: textinput
-			text: value
 			clip: true
 			anchors.fill: parent
 			wrapMode: Text.WrapAnywhere
 			font.family: boldFont.name
 			selectByMouse: true
+			onTextChanged: {
+				var stringRegEx = new RegExp('"^\\"*', "g")
+				var str = stringRegEx.exec(text)
+				if (str && str.length > 0)
+					value = str[0]
+				else
+					value = text
+			}
 		}
 	}
 }
diff --git a/mix/qml/js/InputValidator.js b/mix/qml/js/InputValidator.js
index 8a8ef1715..aa3b90150 100644
--- a/mix/qml/js/InputValidator.js
+++ b/mix/qml/js/InputValidator.js
@@ -187,7 +187,15 @@ function validateAddress(_type, _value)
 function validateBytes(_type, _value)
 {
 	var ret = { valid: true, message: "" }
-	if (_value.length > parseInt(_type.replace("bytes", "")) )
+	if (_value.indexOf("\"") === 0 && _value.indexOf("0x") !== -1)
+	{
+		//this is a different fomatting
+		var stringRegEx = new RegExp('".*"', "g");
+		var matches = _value.match(stringRegEx);
+		if (matches.length === 1)
+			_value = matches[0]
+	}
+	if (_type !== "bytes" && _value.length > parseInt(_type.replace("bytes", "")) )
 	{
 		ret.valid = false;
 		ret.message = _type + " should not contains more than " + _type.replace("bytes", "") + " characters";