Dynamic PropertyGrid with QML and C++

[kappa]

Hello.
I have something like PropertyGrid defined in QML (using GridView element).
I can add my elements (PGRow, which is a row with two rectangles with labels). I'm doing it using ListModel:

@
GridView {
[...]
delegate: rowDelegate
model: pgModel
}

ListModel{
    id: pgModel
    objectName: "pgModel"
    ListElement{
        caption: "Property 1"
        value: "12345"
    }
}
Component{
    id: rowDelegate
    PGRow{
        caption: model.caption
        value: model.value
    }
}

@

My problem is: I want to add rows dynamically using C++. How should I do it?
I've read this: "Using QML Bindings in C++ Applications":http://doc.qt.nokia.com/4.7-snapshot/qtbinding.html but still have no idea how to get to the pgModel elements from C++.