ActionScript 3.0 :: Auto-scroll DataGrid Content When Dragging A Row?

autoscroll functionality in Flex2's DataGrid while dragging an element row in it. Is there such a functionality or not?

I mean, I have a DataGrid which contains a collection of rows. The collection is longer that the DataGrid could fit, hence there is a vertical scrollbar that allows to get to the rest of rows. I have enabled the functionality of moving-by-draging to be able to change the order of rows in the DataGrid (see the simple code below).

Now, let's say I want to move the first (topmost) row to the last (bottom) position of the collection. When the top row is displayed, the bottom one is not visible (not without moving the scrollbar). So when I drag the top row, I cannot drop it beyond the few currently visible rows. Surely I could drag a bit and then scroll to bottom and then drag a bit more, but that's not the point. The point is - is there a functionality of autoscroll implemented in Flex2 DataGrid, where the collection would scroll itself automatically to allow one to drag beyond the few visible rows?

In Adobe's official PDF document "Flex2 Developer's Guide", section "Using drag-and-drop with list-based controls" I've found this sentence:

Quote:

If the control has active scroll bars, hovering the mouse pointer over the controls top or bottom scrolls the contents.

Well, it suggests that there should be this functionality I ask about. But it doesn't work for me.

Here's the simple code that builds the DataGrid in Flex2, that fails to autoscroll, if you care to check it:

[Code]...