on sign change:
	if line 1 is "[kup dzialke]":
		if line 2 is "[20x20]":
			set line 1 to "&7[&eKup&7]"
			set line 2 to "&7[&edzialke&7]"
			set line 3 to "&e[20x20]"
			send "&e&lStworzyles sklep!"
on right click on sign:
	if line 1 is "&7[&eKup&7]":
		if line 1 is "&7[&eKup&7]":
			execute player command "/i 2256 1 name:&6Dzialka 20x20"
			wait 1 tick
			if player's balance is greater or equal to 10:
				wait 1 tick
				stop