Gamepass script not giving walkspeed? [SOLVED]

Cawlonee, I got the error: Workspace.Script:8: function arguments expected near ':'

The script is supposed to check if a player has the gamepass, and then change their walkspeed to 30. It's not changing the walkspeed.

local id = 216653360
 
game.Players.PlayerAdded:connect(function(newplayer)
local player = newplayer.Character
	local humanoid = player:WaitForChild("Humanoid")


    if game:GetService("GamePassService"):PlayerHasPass(player, id) then 
	
	humanoid.Walkspeed = 30
        
   
    end
end)

Script I made that worked:

local id = 216653360

game.Players.PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
	if game:GetService("GamePassService"):PlayerHasPass(player, id) then		
				character.Humanoid.WalkSpeed = 25
end	
	end)
	
end)

Use the CharacterAdded event to give it on every respawn.

local id = 216653360

game.Players.PlayerAdded:connect(function(newplayer)
	newplayer.CharacterAdded:connect(function(character)
			    local humanoid = character:WaitForChild("Humanoid")

	    if game:GetService("GamePassService"):PlayerHasPass(newplayer, id) then 
	 	  humanoid.WalkSpeed = 30 -- It's WalkSpeed, not Walkspeed
	    end

	end)
end)

If you get anything in the output, tell me and Ill fix any syntax errors.