[Error] Fixed damage attack?

[Rbade]

been trying to make a fixed damage attack that deals 100 HP

class PokeBattle_Move_164 < PokeBattle_Move
  def pbEffect(attacker,opponent,hitnum=0,alltargets=nil,showanimation=true)
    return pbEffectFixedDamage(100,attacker,opponent,hitnum,alltargets,showanimation)
  end
end

for some reason, it reeeeally doesn't like this?

 

[WolfPP]

Look for Nature's Madness in move.txt, there you'll check damage 0. Maybe you need to edit that too.