Help with swapdepth

hello, i’m using the tutorial http://www.kirupa.com/developer/actionscript/swapdepth.htm but as my file is an external swf i changed the code to

on (press, dragOver) {
	startDrag(_parent.pola3,false, -285, 100, 210, -25); 
}
on (release, rollOut, dragOut) {
	stopDrag();
}
on (press, release, dragOver, dragOut) {
	_parent.x +=2;
	_parent.pola3.swapDepths(_parent.x);
}

but it’s totally messing my file, i can’t drag my mc’s anymore but the swapdepth work while it seems to be incrementing more and more. my file is here (quite big!)http://www.artefakt.be/pola.zip :h:
Thanks,

Ubik