HELP MAKING VX NOT RETARDED (MAKING ENEMIES PHYSICAL IMMUNE)

#==============================================================================
# ** RPG::Enemy Module
#------------------------------------------------------------------------------
# This module handles enemy information.
#==============================================================================

module RPG  
  class Enemy    
    #--------------------------------------------------------------------------
    # * Get Enemy Physical Inmunity
    #--------------------------------------------------------------------------            
    def physical_inmune      
      return self.note.include?("Phys_Inmune")
    end
  end
end

#==============================================================================
# ** Game_Battler
#------------------------------------------------------------------------------
#  This class deals with battlers. It's used as a superclass of the Game_Actor
# and Game_Enemy classes.
#==============================================================================

class Game_Battler
  #--------------------------------------------------------------------------
  # * Calculation of Damage From Normal Attack
  #     attacker : Attacker
  #    The results are substituted for @hp_damage
  #--------------------------------------------------------------------------
  alias tds_phys_inmunity_make_attack_damage_value make_attack_damage_value
  def make_attack_damage_value(attacker)
    # If Self is a Game Enemy
    if self.is_a?(Game_Enemy)      
      # If Self Is physically inmune
      if self.enemy.physical_inmune        
        # Set Damage to 0
        @hp_damage = 0
        return
      end
    end
    tds_phys_inmunity_make_attack_damage_value(attacker)
  end
end

#==============================================================================
# ** Scene_Battle
#------------------------------------------------------------------------------
#  This class performs battle screen processing.
#==============================================================================

class Scene_Battle < Scene_Base  
  #--------------------------------------------------------------------------
  # * End Turn
  #--------------------------------------------------------------------------
  def turn_end
    $game_troop.turn_ending = true
    $game_party.slip_damage_effect
    $game_troop.slip_damage_effect
    # Display Slip Damage Effect
    display_slip_effect_damage
    $game_party.do_auto_recovery
    $game_troop.preemptive = false
    $game_troop.surprise = false
    process_battle_event
    $game_troop.turn_ending = false
    start_party_command_selection
  end  
  #--------------------------------------------------------------------------
  # * Show Slip Effect Damage
  #--------------------------------------------------------------------------
  def display_slip_effect_damage
    # Go through Game Party and Game Troop members
    ($game_party.members + $game_troop.members).each do |member|
      # Next if member is dead
      next if member.dead?
      # Next if Member does not have any form of Slip Damage
      next if member.slip_damage? == false      
      # Play Poison SE
      Audio.se_play("Audio/SE/Poison", 100, 80)  
      # Poison Text Display
      text = member.name + " received " + member.hp_damage.to_s + " Poison Damage."      
      # Draw Poison Damage
      @message_window.replace_instant_text(text)      
      # Wait 45 Frames
      wait(45)
    end
    # Wait 30 Frames
    wait(30)
  end  
end