AI attack only one character

Hello i am trying to make third person shooter game where player has two characters and player can control only one character at a time but my problem is, the AI character attack only the character which controlled by player and ignore the second player character.
If player control character A then AI character attacks only character A and ignore character B and if player controller possess to character B then AI character ignore character A and start attacking on character B what should I do? please help!!!

And sorry for my bad english:)
Thank you!!

Will bump this up, need this answer

Screenshots are always helpful, lets see that AI BP

I’m only guessing, without any blueprints etc, that the controlled character is the one triggering the behavior (getting within range, positive perception result). The non controlled, unless the AI path just happens upon it, may not be able to trigger the AI behavior?