[Scripting Question] Deleting moves with a certain ID on levelup.

[StanggTwin]

Hi, so I am currently trying to get moves with a certain id of 850 or higher to be deleted upon evolution (since they are supposed to be moves unique to each species). The game crashes in debug whenever I try to get there, though. My code is as follows (edited from UI_Evolution (v.19.1), new additions highlighted).

  def pbEvolutionSuccess
    # Play cry of evolved species
    frames = GameData::Species.cry_length(@newspecies, @pokemon.form)
    pbBGMStop
    Pokemon.play_cry(@newspecies, @pokemon.form)
    frames.times do
      Graphics.update
      pbUpdate
    end
    # Success jingle/message
    pbMEPlay("Evolution success")
    newspeciesname = GameData::Species.get(@newspecies).name
    pbMessageDisplay(@sprites["msgwindow"],
       _INTL("\\se[]Congratulations! Your {1} evolved into {2}!\\wt[80]",
       @pokemon.name,newspeciesname)) { pbUpdate }
    @sprites["msgwindow"].text = ""
    # Check for consumed item and check if Pokémon should be duplicated
    pbEvolutionMethodAfterEvolution
    # Modify Pokémon to make it evolved
    @pokemon.species = @newspecies
    @pokemon.form    = 0 if @pokemon.isSpecies?(:MOTHIM)
    @pokemon.calc_stats
    # See and own evolved species
    $Trainer.pokedex.register(@pokemon)
    $Trainer.pokedex.set_owned(@newspecies)
    # Learn moves upon evolution for evolved species
		[B]movesknownevo = @pokemon.moves
		for i in movesknownevo
			next if i.id>=850
			pbDeleteMove(i[1]) { pbUpdate }
		end[/B]
    movelist = @pokemon.getMoveList
    for i in movelist
      next if i[0]!=0 && i[0][email protected]   # 0 is "learn upon evolution"
      pbLearnMove(@pokemon,i[1],true) { pbUpdate }
    end
  end