def update_item_selection
    if Input.trigger?(Input::B)
          Sound.play_cancel
          return_scene
        elsif Input.trigger?(Input::C)
          @item = @item_window.item
          if @item != nil
            $game_party.last_item_id = @item.id
          end
          if $game_party.item_can_use?(@item)
            Sound.play_decision
            determine_item
          else
            Sound.play_buzzer
          end
        elsif Input.trigger?( Input::NUMBERS[6] )
            Sound.play_decision
            id = @item_window.item.nil?() ? 0 : @item_window.item.id
            $game_actors[1].set_item_slot(0, id)
        elsif Input.trigger?( Input::NUMBERS[7] )
            Sound.play_decision
            id = @item_window.item.nil?() ? 0 : @item_window.item.id
            $game_actors[1].set_item_slot(1, id)
        elsif Input.trigger?( Input::NUMBERS[8] )
            Sound.play_decision
            id = @item_window.item.nil?() ? 0 : @item_window.item.id
            $game_actors[1].set_item_slot(2, id)
        elsif Input.trigger?( Input::NUMBERS[9] )
            Sound.play_decision
            id = @item_window.item.nil?() ? 0 : @item_window.item.id
            $game_actors[1].set_item_slot(3, id)
        elsif Input.trigger?( Input::NUMBERS[0] )
            Sound.play_decision
            id = @item_window.item.nil?() ? 0 : @item_window.item.id
            $game_actors[1].set_item_slot(4, id)
    end
  end