Runtime embedding of fonts in Flash CS4 for chinese,japanese, cryllic etc extended characters

Question

Hi I have no problem with runtime embedding of fonts, there are plenty of online tutorials for this. However, what I can't get to work is runtime embedding for extended character sets, even if I omit the unicode range and embed the entire font.

I've tried various approaches, and though I am able to runtime embed the font properly, can't get japanese, cryllic, chinese, etc characters to display in my dynamic textfield.

Does anyone have an example they could possibly share, or suggest what my issue may be?

Here is just one example of runtime embedding on gotoandlearn http://www.gotoandlearn.com/play?id=102