on rightclick on sign:
    if line 1 is "aa":
        if {money.%player%} is greater than or equal to 1:
            execute console command "menu grab %player% money100"
            send "&9》&a100円を交換しました。"
            set {_location} to location of player
            play sound "UI_BUTTON_CLICK" with volume 1 with pitch 1 at {_location}
            subtract 100 from {money.%player%}
        else:
            send "&9》&aお金が足りていません。"
            set {_location} to location of player
            play sound "UI_BUTTON_CLICK" with volume 1 with pitch 1 at {_location}