Player Joining Script Issue?

So here's a script that's supposed to on join make the player's walkspeed = 0 (frozen) but it's not working. Please help!

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        character.Humanoid.Walkspeed=0
    end)
end)

Miss-spelt WalkSpeed.

A lot of ROBLOX objects are case-sensitive.