AI Perception - Detecting non-player actors and detection by priority?

Currently working on putting together an AI setup for a level. Using AI Perception I have a basic system in place, to allow the AI in the level to chase the player. once they catch the player, or they lose sight of the player, they wait for a brief period then return to their home point, set when the level starts.

What I want the AI to be able to do is chase after another actor which the player is capable of spawning. I want this actor to take priority over the player. While I have the priorities set in the Blackboard, and the Blackboard has a key to use to identify the other actor, I can’t get the AI to register the presence of the alternate actor, let alone prioritise it.