"the script extension does not exist" :sad: anyway thanks All of those function calls exist in vanilla Skyrim. Can you provide the full and exact text of your script and the error log? "the extends script does not exist,please pick one that does" Event OnDeath(Lvlwerewolf) ; if you care only that this event runs if the killer is the player. if Lvlwerewolf == Game.GetPlayer() RegisterForSingleUpdateGameTime(24.0) endif EndEvent,I put it in the npc script option but it does not recognize it as a valid script, I still could not add the rest because I do not know where the "alias" option is or whatever it was I am sorry and I ask for patience since it is not so simple, it is clear that I need basic knowledge of scripts