[Przeróbka skryptu] Skrypt na sell

Witam umie ktoś przerobić ten skrypt tak, aby jak wpisze /sklep wyświetlało się GUI i gdy kliknę stone to gdy nie mam 64 kobla to pisze nie masz wystarczjonco kobla, a gdy mam to pisze sprzedałeś 64 kobla i do mojego konta zostaje dodane 20 pieniędzy.

Kod:

command /sklep:
	trigger:
		open chest with 3 rows named "&3&lP&b&lr&3&ly&b&lz&3&lm&b&la&3&lr&b&ly&3&ln&b&l.&3&lp&b&ll" to player
		format slot 0 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 1 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 2 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 3 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 4 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 5 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 6 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 7 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 8 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 9 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 10 of player with 1 of stone named "&2&lSprzedaj cobla" to close then run [execute player command "kobel"]
		format slot 11 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 12 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 13 of player with 1 of skull of ("BlockminersTV" parsed as offlineplayer) named "&c&lWkrutce" to be unstealable
		format slot 14 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 15 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 16 of player with 1 of paper named "&c&lWkrutce" to be unstealable
		format slot 17 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 18 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 19 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 20 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 21 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 22 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 23 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 24 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 25 of player with 1 of black glass pane named "&3&lNic" to be unstealable
		format slot 26 of player with 1 of black glass pane named "&3&lNic" to be unstealable