Detect (and count) collision between vehicle and NPC

Hi all,

I am wanting to detect and count how many NPCs collide with a player controlled helicopter. Not sure if it is possible to attach a volume to the spawned heli (or player with offset to be centered to vehicle) or there is another way. I would need the ‘NPC collided with’ count as it is part of gameplay.

Also is is possible to detect the impact speed so I can see if the NPC has been struck fatally or just clipped.

Thank you