[Solved] Why are the properties undefined?

[carlg]

<script type="text/javascript">
        function onSelect(e) {
            var item = $(e.item);
            var treeview = $("#TreeView").data("tTreeView");
            var nameoftree = treeview.Name;
            alert(nameoftree );
        }
    </script>

The Name property is undefined and so is the selectedindex property.

How do I access these properties without getting undefined returned in my alert?