Help. How do i put a spotlight in the heads of players when they enter the game?

How do i put a spot light in the heads of players when the enter my game?

function Entered(P)
L=Instance.new("SpotLight",P.Character.Head)
---If you want to, you can edit the spotlight's properties here.
--ex: P.Brightness=5
end

game.Players.PlayerAdded:connect(Entered)