command /kowal:
    trigger:
        if name of player's held item contains "&6&lBRUSH":
            set {_i} to name of player's tool
            open chest with 3 rows named "&6Kowal" to player
            set slot (integers between 0 and 30) of player's current inventory to black stained glass
            set slot 12 of player's current inventory to blaze rod named {_i} with lore "&c&lTwój Brush"
            set slot 14 of player's current inventory to blaze rod named {_i} with lore "&3&lWciśnij aby ulepszyć!" and "&e&lSzansa na ulepszenie wynosi 35%%!"
        else:
            send "&cNie trzymasz przedmiotu który mogę ulepszyć" to player
on inventory click:
    if inventory name of player's current inventory is "&6Kowal":
        cancel event
        if clicked slot is 14:
            if player is holding blaze rod named "&6&lBRUSH &e&l2x2":
                chance of 35%:
                    remove blaze rod named "&6&lBRUSH &e&l2x2" from player
                    give player blaze rod named "&6&lBRUSH &e&l4x4" with lore "&6Magiczny przedmiot!" and "" and "&7Uderz w blok, a w jego zasiegu" and "&7zostanie wykopane 4x4 innych bloków!" and "" and "&9+ Ułatwia kopanie"
                    send "&c&lUdało ci się ulepszyć item!"
                    close player's inventory
                else:
                    remove blaze rod named "&6&lBRUSH &e&l2x2" from player
                    send "&c&lTwój przedmiot się spalił!"
                    close player's inventory
            if player is holding blaze rod named "&6&lBRUSH &e&l4x4":
                chance of 35%:
                    remove blaze rod named "&6&lBRUSH &e&l4x4" from player
                    give player blaze rod named "&6&lBRUSH &e&l6x6" with lore "&6Magiczny przedmiot!" and "" and "&7Uderz w blok, a w jego zasiegu" and "&7zostanie wykopane 6x6 innych bloków!" and "" and "&9+ Ułatwia kopanie"
                    send "&c&lUdało ci się ulepszyć item!"
                    close player's inventory
                else:
                    remove blaze rod named "&6&lBRUSH &e&l4x4" from player
                    send "&c&lTwój przedmiot się spalił!"
                    close player's inventory