Problem with external SWF

Hi fellow flashers…

I have a really annoying problem which is bugging me. I want to tell my parent movie to gotoAndPlay from a external swf I am loading in with:

loadMovie(“submovie.swf”, mcMenu);

within the code of the submovie.swf I have tried:

_level0.logo.play();
_parent.logo.play();
_root.logo.play();

All of which work when I preview… however they dont work on my web page.
Do I need to pass parameter when I embedd to allow them to communicate?
I have cleared cache, and it is definately not working.

Many Thanks to those who read this.

Kurt