AS3 Embedded MovieClips via Flex Builder

Very simple question:

I have a SWF made in CS4.

I use Embed tags to import the movieclip in Flex Builder 3.

However, all of the actions on the movieclip (stop(), gotoAndPlay(), dispatchEvent())… simply do not work.

You can try it yourself, it just won’t work.

Anyone able to fix this problem? I really hope it’s a matter of checking/unchecking certain boxes on export.