How do I receive reaction of NPC when i hit other NPC?

I have sprite 'Bullet', 'Player' and 'NPC'

NPC have behavior Line of sight

i put few this same NPC's on map

now when i shoot thru one NPC and this NPC will be hurt (or killed)

when OTHER NPC see this should have some reaction, for example turn color to RED

how can i do this?

You can add NPC sprite to a family and move LineOfSight behavior to the family level. Then you will be able to pick family instances independently from NPC instances.

> Bullet on collision with NPC
.. FamilyNPC has LOS to LPC : FamilyNPC set animation to "shoked"

if i understand well, i make that code, i set 'destroy NPC' witness to be sure he have seen this action:

i need to make event to NPC not to family because all instance variables already have 'NPC' Like AI behavior, and other statistics. So This new family dont have this stats

i also try use function:

but also dont work