Qml doesnt free memory when javascript function is called inside createQmlObject untill application closed.

import QtQuick 1.1

Rectangle
{
    id: top
    width: 200; height: 200
    color: "white"
    property variant item

    Timer {
        id: timer
        running: true; repeat: true
        interval: 5
        onTriggered: {
            if(item)
                item.destroy();
            item = Qt.createQmlObject('import QtQuick 1.1; Rectangle {color: "red"; width: 50; height: 50; radius: 20; anchors.centerIn:parent; function test(){}}',
                                      top);
        }
    }

    Timer{
        id: timer2
        running: true; repeat: true
        interval: 50
        onTriggered: gc();
    }
}

item = Qt.createQmlObject('import QtQuick 1.1; Rectangle {color: "red"; width: 50; height: 50; radius: 20; anchors.centerIn:parent}',top);