Defining a function dynamically... from a different MC

Hi. I’m building a script that adds a textfield to a movieclip. I need to add an onkillfocus event to that textfield that will make it call a certain function, which is located in the movieclip where the textfield will reside. The trouble is that I’m creating the textbox in a script in a completely different movieclip, and I’m having trouble getting the event to find the function.

_root[“item”+x][“labelText”+y].onKillFocus = function() { labelEmpty(this._name) };

The absolute path to this function is _root[“item”+x].labelEmpty

How do I get this event to call the labelEmpty function? Thanks a lot for helping me out.