doesnt recognize a dynamic clip in AS2

[gertila]

i created dynamic clips and attached a movieClip to them:

for (i=0; i<6; i++) {
	this.createEmptyMovieClip("targetClip"+i, this.getNextHighestDepth());
	_root["targetClip"+i]._x = i*20;
	_root["targetClip"+i].attachMovie("btnM"+i, squere, this.getNextHighestDepth());
}

i added a button to each clip:

for (var m:Number = 0; m<11; m++) {
	this["targetClip"+m] = addBehaviour(m);
}
function addBehaviour(m) {
	this["targetClip"+m].onRelease = function() {
		pressed(this._name);
	};
}
function pressed(storedName) {
	storedName = storedName.slice(10, 12);
	_root["targetClip"+storedName]._y = 400;
}

and it doesnt recognize :_root["targetClip"+storedName]._y

i dont understand what i am doing wrang?

[jim_morrison3]

Run a trace command and see what do you get as the output.