Hello, there.

I'm trying to make a quest about catching an escaped criminal.

The alias is pointing to a bandit leader. I put a script on it with event OnEnterBleedOut()

Event OnEnterBleedout()    getActorRef().stopCombat()    getActorRef().removeFromAllFactions()    getOwningQuest().setStage(20)EndEvent

The dude drawn his weapon but immediately attack again me.

Does the RemoveFromAllFactions() works on respawnable NPCs?

Looks like from the wiki page that it will not remove factions from the ActorBase, only the Actor reference.

Alias is already pointing to actor.

No, I mean that RemoveFromAllFactions() will only remove factions you added to the actor via AddToFaction. If you did that though, then something else is most likely broken.

Edit: Misread the wiki page. May be completely wrong here. I assumed it would also function similarly to removing spells...

Ok, I solved my issue. I had to create an ability spell which permanently "damages" his aggression value (since is ummodable via setAV())

Bandit leader is very aggressive at default.