[flexcoders] help? how to access the list component data to pass off

[chris.flexfactory]

i have created two list controls which you can drag from one to the 
other.

how do i trace or select all the list data in the target list?

trace('selected list data:'+ac_selected.listdata);

?????

want to pass it off to the coldfusion component also

<selectedlist>{ac_selected.?????}</selectedlist>

any help is appreciated