I am trying to create a dialogue option that when selected makes the NPC go aggro. Basically the character asks a question, and then the guy thinks he knows to much and attacks. How do I do this?

(Unnecessary details)
Also, this guy is a member of a faction I made, and there are other members of this faction in the room with him. I want them to aggro when he does. Will this happen automatically when I hit him, or will I have to script that?

Write in dialogue

AkSpeaker.StartCombat()

If it doesn't works write StartCombat()

Thanks so much! I'm really glad this forum exists. I'm trying to piece together what I can, but for the most part I'm kind of floundering.

You are welcome i'm from Ukraine and by myself glad that this forum exist

Hmmm. I tried every syntactical combination of StartCombat I could get my hands on, including AkSpeaker.StartCombat(Game.GetPlayer()) and none of it will compile!
Basically what I am doing is typing your command (and other versions of it) into the End: box Papyrus Fragment thing and trying to compile. But it won't.

Do you know properties?

No, what properties?