Custom Functions (WC3 World Edit Help)

I have tried for many a good hours and come up with no solution except perhaps that its hard coded into the exe. My problem was this, to have each player select a different unit.

There is a function in World edit called SelectUnitSingle() which is found in the Blizzard.j file and is editable, but the problem is that this function and all the Select class functions call Select Unit which only takes two parameters (whichUnit, boolean (True/False)). To the best of my knowledge this function SelectUnit() is not found anywhere, and therefore must be hard coded into the exe. Perhaps I am missing something incredibly simple. Is there a way of editing this function and if not is it possible to create your own function to have this working? If it is could you please give an example. Thanks.

-Aiursrage2k

There are so called natives declared in common.j which are hard coded and therefore cannot be edited.
I don't quite understand your problem. What exactly do you want to do ?