Cannot disable movieclip button?!

1

I made a movieclip as a button, but it still clickable after I set it’s property enabled = false,

is it correct?


function disableButton(i){
    _root.buttonsBg["v6bt"+i].upBt.attachMovie("disableBt", "disableBt", 3);
    _root.buttonsBg["v6bt"+i].upBt.enabled = false;
    //trace(_root.buttonsBg["v6bt"+i].upBt.enabled);
}