[flexcoders] How to get the real X & Y of a repeater item

[zipo13]

Hi,
In my app I create a repeater the generats VBoxes each with button in it.
When the user clicks on the button I want to generate a small dialog
that will open up under the button.
I know how to get the repeater current item and target and current
target but I can't find the real X & Y of the button.
Am I going in the wrong direction?