List-Component does not fetch change event

[Ronald Wernecke]

I have a Listbox, where I assign attributes dynamicly.
Everything works quite well, but the assignment of a eventhandler for the change event (other, less usefull, work this way)

her is my code

Code: [Select]

l1.dataProvider=liste;
l1.selectedItem.onChange=ausgabe;
l1.vScrollPolicy="auto";
l1.backgroundColor=0x666666;
l1._alpha=50;
function ausgabe(){
getURL(l1.selectedItem.data);
}
If I put the list component on stage, and insert the event into the components script, it works - but it needs to be dynamic.
Maybe it needs to be written differently - but I tried many versions.
I NEED A HINT

[Ronald Wernecke]

This works:

Code: [Select]

l1.addEventListener("change",ausgabe);