createClassObject best pratice?

Hello,

I have a problem with flash as2.0 components… I can easily create instances but i am having a very hard time to get rid of them.


import mx.controls.ComboBox;
this.createClassObject(mx.controls.ComboBox,"imgCombo",10,{_x:10, _y:50});
this.destroyObject("imgCombo");
for (var a in this) {
	trace(this[a])
}
traces : 
WIN 9,0,45,0
_level0.reserved
_level0.focusManager
_level0.imgCombo
*/

So how can i delete this ■■■■ component??