Index undefined for elements in ObjectModel?

[billconan]

according to Qt document http://qt-project.org/doc/qt-5/qml-qtqml-models-objectmodel.html#index-prop

An item can determine its index within the model via the index attached property.

my object model code:
@ ObjectModel {
id: itemModel

    Rectangle {
        width: view.width; height: view.height
        color: "#FFFEF0"
        Text { text: "Page 1"; font.bold: true; anchors.centerIn: parent }

        Component.onDestruction: if (printDestruction) print("destroyed 1")
    }
    Rectangle {
        width: view.width; height: view.height
        color: "#F0FFF7"
        Text { text: "Page 2"; font.bold: true; anchors.centerIn: parent }

        Component.onDestruction: if (printDestruction) print("destroyed 2")
    }
    Rectangle {
        width: view.width; height: view.height
        color: view.currentIndex == index ? "blue" : "white"
        Text { text: "Page 3"; font.bold: true; anchors.centerIn: parent }

        Component.onDestruction: if (printDestruction) print("destroyed 3")
    }@

but when I ran, I saw this:

qrc:///main.qml:30: ReferenceError: index is not defined

what's the problem?

[p3c0]

Looks like a bug to me. The count property works but not the index.

[billconan]

will file a bug.

thanks!

[dheerendra]

Did you try with itemModel.index ?

[p3c0]

That too doesn't work.