Stopwatch macro on YouTube issue

Hi everyone

I've been looking for a stopwatch and have found one perfect for my needs. I've copied the video exact but it doesn't work, I get an error (2nd line on macro but I can't remember the error code!)

If anyone can simply this for me somehow and/or guess what I may have done wrong, then I would much appreciate it!

http://youtu.be/ZkblABsFHWc

Many thanks

Michael