I have done as described here: Added an AI perception component to the controller of the actor that should perceive others. Then I added a perecption stimuli component to the other actors that I want to perceive by the first actor. Then in the OnPerceptionUpdated event (in the perceiving actor controller, where the AI perception component is) I simply print out a string.
However, when I run the game and a perceivable actor (with stimuli component) enters the sight radius of the perceiver, then nothing happens, nothing is printed.
Any ideas what I might be missing?