need radio button component labels multiline

I have a multiple choice quiz using radio button component - got the whole thing from Flash@Work book, chapter 5.
A few of the radio button labels need to be 2 lines - and I have styled them with fontSize, but I don't see how to make them multi-line.

All of the text is being loaded from an xml file, and the radio btn components are not on stage, they are being called with
createClassObject.

I can't seem to find where this question has been answered before - does anyone have the answer?

thanks, angela