Using AI damage sense to check nearby damage

I am making an AI that respond to damage near them. If there is a fight near them, they will be triggered and join the fight. Seems that it won’t work out of the box, I see no option here in sense config. How am I supposed to implement this behavior?

290177-damage-sense.png

My guess is that damage sensor supposed to works globally. And if I want to set an area, I have to add a sight sensor, then manually add code to filter sensed actors. Am I right?