property firstSelectedData

This property returns a reference to the first selected data row. Returns null object if no selected items. Once this method is called the iteration sequence is reset so that calling nextSelectedData returns the second data key and so forth.

var list = scene.getBoxById("myList");
if (list)
{
    var sel = list.selection;
    if (sel)
    {
        var selData = sel.firstSelectedData;
        while (selData)
        {
            Foo(selData); // process data row
            selData = sel.nextSelectedData;
        }
    }
}