import mx.effects.DefaultListEffect;
import mx.collections.ArrayCollection;
[Bindable]
private var dataCollection:ArrayCollection = new ArrayCollection();
private function removeFromList():void {
var index : int = dataCollection.getItemIndex( tileList.selectedItem );
dataCollection.removeItemAt( index );
}
private function addToList():void {
dataCollection.addItemAt( Math.random(), 0);
}