on rightclick on entity:
    entity's display name is "Kupiec":
        set {_} to type of player's tool
		set {_i} to player's tool
        set {_name} to to name of player's tool
        set {_lore} to "%line 1 of lore of player's tool%"
        if {_} is air:
			send "&8>> &cW rece musisz trzymac przedmiot!"
			stop
		if {item::%{_i}%.%{_name}%.%{_lore}%} is not set:
			send "&8>> &cTego przedmiotu nie da sie sprzedac!"
			stop
		set {_xx} to {item::%{_i}%.%{_name}%.%{_lore}%} parsed as number
		add {_xx} to {moneta.%player%}
		remove {_i} from player's inventory
		send "&8>> &aSprzedales &7%{_}% &aza cene: &7%{item::%{_i}%.%{_name}%.%{_lore}%}%"
		stop
        
command /dodajitem [<number>]:
	permission: item.dodaj
    trigger:
        set {_} to type of player's tool
		set {_i} to player's tool
        set {_name} to to name of player's tool
        set {_lore} to "%line 1 of lore of player's tool%"
		if {_} is air:
			send "&8>> &cW rece musisz trzymac przedmiot!"
			stop
		if arg 1 is not set:
			send "&8>> &cWpisz cene!"
			stop
		set {item::%{_i}%.%{_name}%.%{_lore}%} to "%arg 1%"
		send "&8>> &aOd teraz &7%{_i}% %{_name}% %{_lore}% &akosztuje &7%arg 1% monet&a!"
		stop