Qml Debugger not breaking

import QtQuick 1.0

Rectangle {
    id: root
    width: 360
    height: 360
    Text {
        id: myText
        text: "Hello World"
        anchors.centerIn: parent
    }
    MouseArea {
        anchors.fill: parent
        onClicked: {
            center()
        }
    }

    function center() {
        myText.anchors.fill = root
    }
}