Can I call BTTask from blueprint?

Hi, my AIs are patrolling my level to try to see or hear the player, but are not responding to gunshot sound or damage. I tried to change the rotation on any damage, but they only seem to twitch a bit and then keep on patrolling.

They also have a suspicion behavior that triggers when they are focused on the player but lose sight, which makes them move to the last known location. I wander if it is possible to call suspicion when they receive damage and also when they hear a sound like a gunshot. As of now they react to the sound emitted when the player walks or runs, but not by firing sound, since its not emitted by a player character.