[Scripting Question] Defog error

I'm using essentials v16 and I have a problem with the move defog because it doesn't work like in the games, you know... removing hazards for both sides

class PokeBattle_Move_049 < PokeBattle_Move
def pbEffect(attacker,opponent,hitnum=0,alltargets=nil,showanimation=true)
return super(attacker,opponent,hitnum,alltargets,showanimation) if pbIsDamaging?
pbShowAnimation(@id,attacker,opponent,hitnum,alltargets,showanimation)
opponent.pbReduceStat(PBStats::EVASION,1,attacker,false,self)
opponent.pbOwnSide.effects[PBEffects::Reflect] = 0
opponent.pbOwnSide.effects[PBEffects::LightScreen] = 0
opponent.pbOwnSide.effects[PBEffects::Mist] = 0
opponent.pbOwnSide.effects[PBEffects::Safeguard] = 0
opponent.pbOwnSide.effects[PBEffects::Spikes] = 0
opponent.pbOwnSide.effects[PBEffects::StealthRock] = -1
opponent.pbOwnSide.effects[PBEffects::StickyWeb] = -1
opponent.pbOwnSide.effects[PBEffects::ToxicSpikes] = 0
if USENEWBATTLEMECHANICS
opponent.pbOpposingSide.effects[PBEffects::Reflect] = 0
opponent.pbOpposingSide.effects[PBEffects::LightScreen] = 0
opponent.pbOpposingSide.effects[PBEffects::Mist] = 0
opponent.pbOpposingSide.effects[PBEffects::Safeguard] = 0
opponent.pbOpposingSide.effects[PBEffects::Spikes] = 0
opponent.pbOpposingSide.effects[PBEffects::StealthRock] = -1
opponent.pbOpposingSide.effects[PBEffects::StickyWeb] = -1
opponent.pbOpposingSide.effects[PBEffects::ToxicSpikes] = 0
end
return 0
end

def pbAdditionalEffect(attacker,opponent)
if !opponent.damagestate.substitute
if opponent.pbCanReduceStatStage?(PBStats::EVASION,attacker,false,self)
opponent.pbReduceStat(PBStats::EVASION,1,attacker,false,self)
end
end
opponent.pbOwnSide.effects[PBEffects::Reflect] = 0
opponent.pbOwnSide.effects[PBEffects::LightScreen] = 0
opponent.pbOwnSide.effects[PBEffects::Mist] = 0
opponent.pbOwnSide.effects[PBEffects::Safeguard] = 0
opponent.pbOwnSide.effects[PBEffects::Spikes] = 0
opponent.pbOwnSide.effects[PBEffects::StealthRock] = -1
opponent.pbOwnSide.effects[PBEffects::StickyWeb] = -1
opponent.pbOwnSide.effects[PBEffects::ToxicSpikes] = 0
if USENEWBATTLEMECHANICS
opponent.pbOpposingSide.effects[PBEffects::Reflect] = 0
opponent.pbOpposingSide.effects[PBEffects::LightScreen] = 0
opponent.pbOpposingSide.effects[PBEffects::Mist] = 0
opponent.pbOpposingSide.effects[PBEffects::Safeguard] = 0
opponent.pbOpposingSide.effects[PBEffects::Spikes] = 0
opponent.pbOpposingSide.effects[PBEffects::StealthRock] = -1
opponent.pbOpposingSide.effects[PBEffects::StickyWeb] = -1
opponent.pbOpposingSide.effects[PBEffects::ToxicSpikes] = 0
end
end
end

I need help please :(