Focusing Camera won't work?

I am trying to focus the camera when a player joins but it isn't working. Is this to make the camera look somewhere and stay there until a certain time? Or do I do something else? I got this from the wiki: http://wiki.roblox.com/index.php?title=Camera_manipulation

Normal Script:

game.Players.PlayerAdded:connect(function(player)
    script.LocalScript:clone().Parent = player.CharacterAdded:wait()
end)

Local Script

local cam = workspace.CurrentCamera
cam.Focus=CFrame.new(30,30,30)

First disable that local script

game.Players.PlayerAdded:connect(function(player)
local s = script:WaitForChild("LocalScript"):Clone()
s.Parent = player.PlayerGui
s.Disabled = false
end)