[flexcoders] CollectionEvent and Hierarchical Data ArrayCollection

[grg_blls]

Hi all,

Is it that adding an event listener as:
addEventListener(CollectionEvent.COLLECTION_CHANGE to ArrayCollection 
representing hierarchical data, will not work?

This works fine in a flat data structure acting as dataProvider to ADG, but I 
can't get it work if this data structure is hierarchical..

Any confirmation?

Thanks all
George