How to make some npc's or creatures not be able to be set aflame?

I already tried the Fireimmunity actor effect it doesn't work like that.

Well the Fireimmunity actor effect is modding the fire resist to 85. But all the fire effects that are checking the fire resist condition say

" < 90 "

So maybe with their fire resist at 90+ would work ? Give that a try by making a new actor effect , or just change that one.

But if it still is applying the effect shader ... maybe you can just add a line to the script that plays it ?

Or just put a condition on the Actor effect ( != ) which stands for not equal to what ever form-ID you plug in.

I noticed before the resist was only 85 but I did not think much of it. changing it to 90 plus worked though, thanks.