...var val2:Number = num;
var cchItem:mx.controls.CheckBox;
var param bject = {_x:100,_y: val2+100,label:val};
cchItem = this.createClassObject(CheckBox, "cch"+val2, depth++, param );
cchItem.addEventListener("click", oListener);
trace(20 * val2 + 100);
cchItem.move(400, val2 + 100);
};