.

on NPCRightClickEvent:
    cancel event
    set {_npc} to event.getNPC()
    {_npc}.getFullName() is "{@NPCBlacksmithName}"
    set {_p} to event.getClicker()
    type of {_p}'s tool is {@brushItem}
    name of {_p}'s tool is "{@brushName}"
    set {_gui} to chest inventory with 1 row named "{@GUIName}"
    set slot 4 of {_gui} to anvil named "&aUlepsz" with lore "&7Szanse:", "&7- &a50%% szans na sukces" and "&7- &c50%% szans na niepowodzenie"
    set slot 8 of {_gui} to barrier named "&cAnuluj"
    open {_gui} to {_p}

..