GUI

polecam set player's current inventory

set {_} to chest with 1 row named "&6&lZiemniak"
set slot 0 of {_} to potato named "&ePyra" with lore "&fKartofel"
open {_} to player

on inventory click:
    if name of player's currnet inventory is "&6&lZiemniak":
        clicked slot is 0:
            clicked item is a potato:
                cancel event
                give 1000 of potato to player
                


on inventory close:
    set {wait::%player%} to now
on rightclick on chest or enderchest or hopper: #or co tam sobie wymyślisz jeszcze...
    if difference between now and {wait::%player%} < ("1 second" parsed as timespan):
        cancel event

open chest with 3 rows named "cos" to player

      set player's current inventory's slot 0 to emerald named "cos"

on inventory click:

         if inventory name of current inventory of player is "&6&lPomoc":
        if player's current inventory's slot slot is paper:

               cancel event