variables:
    {Konto2.%player%} = false
    {Konto1.%player%} = false
    
on join:
 open chest with 1 rows named "Konta"
 wait 2 ticks
 format slot 0 of player with 1 of wool:1 named "1" with lore "Konto 1" to close then run [execute player command "ustawkonto 1"]
 format slot 1 of player with 1 of wool:1 named "2" with lore "Konto 2" to close then run [execute player command "ustawkonto 2"]
 
command /ustawkonto [<text>]:
 trigger:
  if arg 1 is "1":
   send "Ustawiłeś konto 1"
   set {Konto1.%player%} to true
   stop
  if arg 1 is "2":
   send "Ustawiłeś konto 2"
   set {Konto2.%player%} to true
   stop
  else:
   stop