Get Marker ID when clicked, flash cs3

Hi! First of all, thank you for ModestMaps!

I'm using Modest Maps with Flash CS3 (AS3), my application takes the markers from an array loaded from an XML file.
the application also displays the list of places of the XML file, what i'd like to do when i click a marker is to get its id (position in the obj_array array) so that i can hilight it in the list of places...

any suggestion?

thank you!