on rightclick using a diamond:
  click is player
  set {_attack} or to a random integer between 1{_atacck} and 3{_GT}
  if {attack} is 1 or 2:
        message "&a>>&aはずれ...."
        clear player's inventory a diamond




  if {_GT} is 3:
  message "&a>>&cガチャにあたりました！"
  set slot 0 of player to iron sword
  clear player's inventory a diamond
  stop