External Inteface: HTML to Flash

Can anyone get this “simple” example to work? I eventually want to be able to pass a variable to Flash whenever a menu link is clicked, but for now I’m just trying to send a variable through a form button. Thanks for any help.

http://www.tornedgedesign.com/_test/externalInterface/HTML_to_Flash.zip

The information comes from this article:
http://www.peachpit.com/guides/content.aspx?g=flash&seqNum=340&rl=1