I can do as Ancient_Mystic said, if I use the trigger like if he use it on someone thats not player 11, the magic stop.
Is there a action like that? Tell me if it is!
Sorry, I can't really understand your English. But from what I can make out,
You want the trigger to only work on units owned by Player 11?
Simple-
Add this condition to the trigger that responds when the item is used.
Condition
(Owner of (Target unit of ability being cast)) Equal to Player 11 (Color)
This will then check to see if the targets are owned by Player 11. If not, then nothing happens.
-Also note that the event must be/ should be
Event
Unit - A unit Beings casting an ability
Unknown at this point:
A like condition should be present:
Condition
(Ability being cast) Equal to *Your Spell*
This ensures you that when a different ability is being cast, it won't start this talk trigger.
Hope that explains what your asking for.
Happy map making!
~ Ancient