HTMLText and CS5 (Embedding Texts)

I’ve done my fair share on searching for this, and I couldn’t really find anything about it except CSS related stuff, which is not what I am looking for.

I have a text field on the stage with font Arial, and I embed Arial Regular, Arial Bold, and Arial Italic, and set my font to Font1* (Arial Regular).

Then I set textfi.htmlText = “<b>HI</b> YO”;

Now this worked fine in my old Flash program, but it won’t recognize it in the new one.

I simply want to use htmlText with AS2.