[flexcoders] How be notified (DRAG_DROP) in header of OLAPDataGrid

[Marcio Napoli]

Hi,

I am trying be notified when i move (DRAG) one item of tree to header 
of OLAPDataGrid.
Is it possible know where (AdvancedDataGridColumn, 
AdvancedDataGridHeaderRenderer) i dropped ?

Thanks,
Marcio N.