How to make an npc turn hostile on dialouge choice in creation kit?

[lyosea]

I've been really getting pissed off with this since there's no videos on how to do this on youtube.

 

I have this npc who you meet in the wilderness and I want him after you say a piece of dialogue for him to start attacking you. A lot of people on different fourms say to make the npc a different faction or to set the npc to attack you but I just don't know the script or where to put the script at? Please help!

 

http://i.imgur.com/v3bvyWa.png

So when I put the right code, does it go here

http://i.imgur.com/RhurAZm.png

OR HERE.....