Help with battle difficulty script!!!

[van helblaze]

How can I call KGC_Battledifficulty from an event instead of the menu screen?

To call KGC scripts I noticed that it is different that other scripts.

usually when I try to call nothing happens.

the script is below

Spoiler

#_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
#_/    â—†         Battle Difficulty - KGC_BattleDifficulty        â—† VX â—†
#_/    â—‡                 Last Update: 2008/02/09                      â—‡
#_/    â—†               Translation by Mr. Anonymous                   Ã¢â€”†
#_/----------------------------------------------------------------------------
#_/  This script adds battle difficulty settings to your game.
#_/============================================================================
#_/  Installation: Insert below KGC_ExtraDropItem and KGC_CustomMenuCommand.
#_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

#==============================================================================#
#                            ★ Customization ★                                 #
#==============================================================================#

module KGC
module BattleDifficulty
  #                       Ã¢â€”† Difficulty Variable â—†
  #  Change the variable the difficulty setting is stored in.
  DIFFICULTY_VARIABLE = 15

  #                           Ã¢â€”† Difficulty â—†
  #  Difficulty Format:
  #   DIFFICULTY << {
  #     :name  => "Difficulty Name",
  #     :maxhp => MaxHP,
  #     :maxmp => MaxMP,
  #     :atk   => Attack,
  #     :def   => Defense,
  #     :spi   => Spirit,
  #     :agi   => Agility,
  #     :param => Attack ・ Defense ・ Spirit ・ Agility (Batch Specification),
  #     :hit   => Hit Ratio,
  #     :eva   => Evasion,
  #     :cri   => Critical,
  #     :exp   => Experience,
  #     :gold  => Gold,
  #     :drop  => Item Drop Rate,
  #   }
  #  Create by the format
  #  （:atk, :def, :spi, :agi (The :param field takes highest priority）
  #  The unit is a percentile of a each item.
  #  :name is not optional
  #  An omitted item is treated as a default of 100
  DIFFICULTY = [] # Do not remove or modify this line!
  # ～ Custom Difficulty Settings Inserted Below Here ～
  DIFFICULTY << {        # Difficulty Level: 0
    :name  => "Easy",
    :maxhp => 80,
    :maxmp => 80,
    :param => 80,
    :cri   => 50,
    :drop  => 90,
  }  # â†