Need help modding Paladin's Prayer ability

[zubovsergei]

I am trying to edit the prayer ability in addon_special_attacks.lua and no matter what I change, nothing seems to change in the game. The prayer ability still damages demons and doesn't heal them.

DO I need to start a new game for changes in addon_special_attacks.lua to take place? I have edited other files so I know how to do it and everything else works okay.