Spawn car only for superadmin

Hi, im trying to make so only superadmins can spawn a vehicle, but it wont work. I can see the help text for spawning a car but it wont read that someone needs to be superadmin. What to do?

TriggerEvent(‘es:addGroupCommand’, ‘car’, “superadmin”, function(source, args, user)
TriggerClientEvent(“es_admin:spawnVehicle”, source)
end, function(source, args, user)
TriggerClientEvent(‘chatMessage’, source, “SYSTEM”, {255, 0, 0}, “Insufficient permissions!”)
end, {help = “Spawn a car”})