Whats wrong with my group walkspeed script?

I tried making it so if they are in my group they get a 5% more walkspeed. It wont work for some reason here it is.

local groupId = 2578189
local speed = 17


local function newPlayer( player )
	if player:IsInGroup(groupId) then -- if player isingroup
		player.CharacterAdded:connect(function( character ) -- wait for character
			local humanoid = character.Humanoid -- character's humanoid
			
			if humanoid then -- if humanoid exisits
			humanoid.WalkSpeed = speed -- set speed
			end;
		end);
	end;
end

game.Players.PlayerAdded:connect( newPlayer ) -- connect event to callback func
table.foreach(game.Players:GetPlayer(), function(i, v)
  newPlayer( v )
end)

Please tell me where I went wrong or what the script is supposed to be. Thanks in advance