formatting XML text

Hi. I've been trying to figure out XML in flash and found a (old) tutorial that worked for me. i want to format the text using html tags. I have found other tutorials on this claiming it's easy using CDATA, but i can't get it to work with mine. It either shows the text with the tags, or NULL when i add it wrong. I understand i need to add bold fonts, etc, but i'm adding the code wrong.

If this IS simple (or even possible), will someone help and show where it needs to be placed in the code? Any help at all is appreciated.

Thanks.