SimpleCollectionItem  - AS3 Flash

package
{
    import fl.controls.ComboBox;
    import fl.controls.Label;
    import fl.data.*;
    import fl.data.SimpleCollectionItem;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.text.TextFieldAutoSize;
    
    public class SimpleCollectionItemExample extends Sprite
    {        
        private var dp:DataProvider;
        private var cb:ComboBox;
        private var myLabel:Label;
        
        public function SimpleCollectionItemExample() {
            dp = new DataProvider();
            var i:uint;
            for(i=0; i<42; i++) {
                var sci:SimpleCollectionItem = new SimpleCollectionItem();
                sci.label = "Item "+i;
                sci.data = null;
                dp.addItem( sci );
            }
            
            cb = new ComboBox();
            cb.dataProvider = dp;
            cb.addEventListener(Event.CHANGE, announceSelectedItem);
            cb.move(10,40);
            addChild(cb);
            myLabel= new Label();
            myLabel.autoSize = TextFieldAutoSize.LEFT;
            myLabel.text = "";
            myLabel.move(10,10);
            addChild(myLabel);
        }
        function announceSelectedItem(e:Event):void {
            var sci:SimpleCollectionItem = e.target.selectedItem as SimpleCollectionItem;
            myLabel.text = "You have selected " + sci.label;
        }
    }
}