As far as Oblivion went the spell code is as follows:Chameleon = M% Chameleon for D secondsInvisibility = Invisibility for D secondsSo Invisibility has always been an off/on switch, either the spell is active and 100% or it is not and off, and as soon as you pick a lock, cast a spell, observe an item, talk to a person, open a door, anything at all other than just move around, it is gone so there is n