So I’ve done as you advised (added use blackboard, then run behavior tree) and still same issue. I added the print string before the branch and wrote (updatedaiperception) and it flashes up, and then of course the AI stops, I move and when the message comes out then it carries out the kill but I have to be stood right in front of it. I am wondering if the task finding my location is dodgy? Here is the code for that: BTS_IsCloseToPlayer posted by anonymous | blueprintUE | PasteBin For Unreal Engine I’ve been told that this could be why it stops, because its at my last location?