[Q]How to get the orderer??

If player1 order player2's unit to do something (by sharing control), how to get the player 1 ?

Owner of (Ordered Unit) always refer to player2, not player1. >"<

I wanna make some Error Tip, but I can't get the orderer>"<

Well, have a conditon when a unit is ordered to move to see if the unit is selected by player one.

Well, it bugs.
Like in DotA:
If player 1 goes to WC and turns on SHARE CONTROL. But he may still select he's hero.
Then when player2 order it, the trigger will return player1=.=(IT SHOULD RETURN PLAYER 2)