Why won't this chatted/animation script work? [Unanswered!]

This is the script in Workspace:

game.Players.PlayerAdded:connect(function(player)
    player.Chatted:connect(function(msg)
        if msg:sub(1, 13) == "Bakudo #1 Sai)" then
            Run = game:GetService("RunService")
            RightShoulder = player.Character.Torso["Right Shoulder"]
            for i = 1, 1 do
                for i = 1, 12 do
                    RightShoulder.C0 = RightShoulder.C0 *CFrame.Angles(0, 0, 0.16)
                    RightShoulder.C0 = RightShoulder.C0 *CFrame.Angles(0, 0.1, 0)
                    Run.Stepped:wait(0.01)
                end
            end
        end
    end)
end)