这是别人做的一个游戏，不知道怎么做到的

#===============================================================
# ● [XP/VX/VXA] ◦ Database Limit Breaker III ◦ □
# * 打破数据库文件中数据数量的限制 *
#--------------------------------------------------------------
# ◦ by Woratana [[email]woratana@hotmail.com[/email]]
# ◦ Thaiware RPG Maker Community
# ◦ Originally released on: 22/02/2008
# ◦ Ported to VXAce by Mr. Bubble on: 30/12/2011
#--------------------------------------------------------------
#==========================================
# ** 用法
#------------------------------------------
# [English]
# 0. 打开项目，打开脚本库（建议先备份数据库文件~）
# 1. 将此脚本插入到“Main”上方.
# 2. 设置DLB_USE_IT=true
# 3. 在DLB_DATA中设置要更改的数据库文件
# 4. 运行你的游戏...
# 5. 完成第3步后，游戏将会闪退
# 6. *不要保存*，关闭项目
# 7. 再次打开你的项目。搞定!
# 8. 设置DLB_USE_IT=false。将此脚本留在脚本编辑器（XP/VX）中.
# 如果您使用的是VX Ace，则无需将此脚本留在脚本编辑器中.
#==========================================
#===========================================================================
# [ENG] Use limit breaker? (set this to false after you run this script,
# and haven't change anything in DLB_DATA after that)
# or REMOVE this script when finished~
#+==========================================================================
DLB_USE_IT = false # (true / false) *完成步骤7后需要修改为false,或删除此脚
# 本(VX Ace)，否则游戏将会一直闪退
if DLB_USE_IT # 不要编辑这一行
DLB_DATA = {
#======================================================
# 要更改其数量上限的数据库文件~
# * 正常数据库文件的限制为999
# * 变量和开关的限制为5000
# 此脚本将允许您将其数量更改为超出其限制~
#===============================
# ** How to setup **
#-------------------------------
# 每要更改一个数据库文件，在下面添加一行.
#结构：“数据库_文件”=>（编号），
# e.g. 'switch' => 5500,
# * 别忘了在后面加上 ,(逗号) !*
#==============================================
# ** [List] 数据库列表 **
#----------------------------------------------
# 'switch' for 游戏开关
# 'variable' for Game Variables
# 'actor' for Actors
# 'class' for Classes
# 'skill' for Skills
# 'item' for Items
# 'weapon' for Weapons
# 'armor' for Armors
# 'enemy' for Enemies
# 'troop' for Troops
# 'state' for States
# 'tileset' for Tilesets (RMXP/RMVXA only)
# 'animation' for Animations
# 'commonev' for Common Events
#======================================================
# * 此处输入需要更改的数据库!
#======================================================
'skill' => 1055,
#========================================================
# * [END] Database Limit Breaker Setup Part
#========================================================
'end' => nil # Close hash
}
if defined?(Audio.setup_midi) # VXA
dformat = '.rvdata2'
elsif defined?(Graphics.wait) # VX
dformat = '.rvdata'
else # XP
dformat = '.rxdata'
end
start_time = Time.now
DLB_DATA.each do |k,v|
dvar = nil
case k
when 'switch'; dname = 'System'; dvar = 'switches'; dnewdata = ''
when 'variable'; dname = 'System'; dvar = 'variables'; dnewdata = ''
when 'actor'; dname = 'Actors'; dnewdata = 'RPG::Actor.new'
when 'class'; dname = 'Classes'; dnewdata = 'RPG::Class.new'
when 'skill'; dname = 'Skills'; dnewdata = 'RPG::Skill.new'
when 'item'; dname = 'Items'; dnewdata = 'RPG::Item.new'
when 'weapon'; dname = 'Weapons'; dnewdata = 'RPG::Weapon.new'
when 'armor'; dname = 'Armors'; dnewdata = 'RPG::Armor.new'
when 'enemy'; dname = 'Enemies'; dnewdata = 'RPG::Enemy.new'
when 'troop'; dname = 'Troops'; dnewdata = 'RPG::Troop.new'
when 'state'; dname = 'States'; dnewdata = 'RPG::State.new'
when 'animation'; dname = 'Animations'; dnewdata = 'RPG::Animation.new'
when 'tileset'; dname = 'Tilesets'; dnewdata = 'RPG::Tileset.new'
when 'commonev'; dname = 'CommonEvents'; dnewdata = 'RPG::CommonEvent.new'
when 'end'; next
else; p 'unknown DLB_DATA!', 'Check carefully what you typed in DLB_DATA'
end
base_data = load_data('Data/' + dname + dformat)
data = dvar.nil? ? base_data : eval('base_data.' + dvar.to_s)
unless data.size > v and v - (data.size - 1) <= 0
add_data = Array.new(v - (data.size - 1)) { eval(dnewdata) }
data.push *add_data
save_data(base_data, 'Data/' + dname + dformat)
end
end
p 'Finished in ' + (Time.now - start_time).to_s + ' sec'
exit
end
# checks for VXAce since these methods do not need to be overwritten
# in RGSS3.
unless defined?(Audio.setup_midi)
class Game_Switches
#--------------------------------------------------------------------------
# * Set Switch
# Make the system be able to set switch ID more than 5000
#--------------------------------------------------------------------------
def []=(switch_id, value)
@data[switch_id] = value
end
end
class Game_Variables
#--------------------------------------------------------------------------
# * Set Variable
# Make the system be able to set switch ID more than 5000
#--------------------------------------------------------------------------
def []=(variable_id, value)
@data[variable_id] = value
end
end
end # unless defined?(Audio.setup_midi)

在这里改数据，步骤按注释里的来