QML's Dynamic object creation feature does not on Nokia's N8 phone

The following works correctly on Windows platform: a rectangle will be drawn at the touch or click position every time I touch on the screen. However, this does not work on N8.

import Qt 4.7

Rectangle {
id: p
width: 200
height: 200
Text

{ id: mytext x: 66 y: 93 text: "Hello World" }

MouseArea {
anchors.fill: parent
onClicked: {

var component;
var rect;

rect = Qt.createQmlObject('import Qt 4.7; Rectangle

',
p, "dynamicSnippet1");
rect.x = mouse.x;
rect.y = mouse.y;
rect.width = 3;
rect.height = 3;
mytext.text = "rect changed";

}

}

}