Changing vehicle livery through a command

I remember seeing another similar topic on here about his command found here but I don’t know enough about development to be able to create a script with it. Anyone that would be willing to help me out?

AddEventHandler('VehicleLivery', function()
	local Veh = GetVehiclePedIsIn(GetPlayerPed(-1))

	SetVehicleLivery(Veh, livery) --CHANGE livery(id)
	SetVehicleExtra(Veh, extraId, toggle) -- CHANGE extraId, toggle(true/false)

AddEventHandler('chatMessage',function(player, playerName, message)
	local msg = string.lower(message)
	if msg == '/livery' then
		TriggerClientEvent('VehicleLivery', player)

Thanks, but is there something that I’m missing. I assume I have to add a command for the components but do I need to edit the livery command? Currently doing /livery changes the vehicle livery to 1 but then gets stuck.

Same thing happens with me. How do I fix? @itshb