Help adding sixth gen features

[AlexTCGPro]

Hello pokecommunity!

I'm trying to add some of the new games features into my project.

I managed to add:
-MegaEvolutions.
-Grass inmunity to Spore, StunSpore, SleepPowder and PoisonPowder.
-Electric inmunity to be paralized.
-The ability Pixilate.
-Sylveon and its evolution method.
-Some fairy type moves.

And more, but I'm having problem making sound based moves bypass substitute, can someone give me a hand?

I know this code checks if the move has the sound flag.

(thismove.flags&0x400)!=0 && # flag k: Is sound-based move

And I know this code handles the damage taken by the substitute

  def pbReduceHPDamage(damage,attacker,opponent)
    endure=false
    if opponent.effects[PBEffects::Substitute]>0 && (!attacker || attacker.index!=opponent.index)
      damage=opponent.effects[PBEffects::Substitute] if damage>opponent.effects[PBEffects::Substitute]
      opponent.effects[PBEffects::Substitute]-=damage
      opponent.damagestate.substitute=true
      @battle.scene.pbDamageAnimation(opponent,0)
      @battle.pbDisplayPaused(_INTL("The substitute took damage for {1}!",opponent.name))
      if opponent.effects[PBEffects::Substitute]<=0
        opponent.effects[PBEffects::Substitute]=0
        @battle.pbDisplayPaused(_INTL("{1}'s substitute faded!",opponent.name))
      end
      opponent.damagestate.hplost=damage
      damage=0
      (...)

Greetings!