simple help'

[.VTZ.]

i was searchin for a fps cam system (non JASS), so i found wimpycow's system
but i need help to make a detection trigger by selecting your own units to make the camera system work(when i tested,mine selecting detection trigger was possible to control enemies units too lol.)
Mui plz.
map link > http://www.hiveworkshop.com/forums/pastebin_data/2q76pd/_files/ARROWS.w3x
thanks / +rep