Wykonujesz po prostu komendy
execute console command "/lp user %player% parent add vip"
execute console command "/lp user %player% parent remove default"
Dodajesz to do jakiegoś eventu np:
on join:
if player level >= 200:
execute console command "/lp user %player% parent add vip"
execute console command "/lp user %player% parent remove default"
Jeżeli używasz jakiejś zmiennej od levela to:
on join:
if {level::%player%} >= 200:
execute console command "/lp user %player% parent add vip"
execute console command "/lp user %player% parent remove default"
Odpowiednio wytabuj.