Making a Damaging version of Spite

[SoulfulLex]

So I'm trying to make a damaging version of Spite. I worked on this once before when I was making my game in Essentials v13. I never got it to work, primarily because I couldn't understand much of the MoveEffects code back then (and I didn't know that moves that did damage AND had primary effects, like Clear Smog, had to have ret=super or return super to do damage and its intended effect).

Since then, I studied the Syntax of MoveEffects some more, and I have the basics down. I'm now testing the moves I made for my game in Essentials v14. The problem now is this effect isn't working at all.

This is the code that I came up with:

################################################################################
# Target's last move used loses 4 PP. (As part of Attack)
################################################################################
class PokeBattle_Move_141 < PokeBattle_Move
  def pbEffect(attacker,opponent,hitnum=0,alltargets=nil,showanimation=true)
    ret=super(attacker,opponent,hitnum,alltargets,showanimation)
    if !opponent.isFainted? && opponent.damagestate.calcdamage>0 &&
       !opponent.damagestate.substitute && opponent.lastMoveUsed<=0
      for i in opponent.moves
        if i.id==opponent.lastMoveUsed && i.id>0 && i.pp>0
          pbShowAnimation(@id,attacker,opponent,hitnum,alltargets,showanimation)
          reduction=[4,i.pp].min
          i.pp-=reduction
          @battle.pbDisplay(_INTL("It reduced the PP of {1}'s {2} by {3}!",opponent.pbThis(true),i.name,reduction))
        end
      end
    end
    return ret
  end
end

The Pokemon attacks, but nothing else happens. I tested this before and after the opposing Pokemon made a move. I've also tested this in Vanilla Essentials v14 while I had the Internal Flag set, but nothing came up in the Debug Log (or in the errorlog.txt) Can someone tell me what I'm doing wrong (or a possible fix)?

 

[monkeySchnase]

&& opponent.lastMoveUsed<=0 ... ?