Hi Joe,
To elaborate on your question.
In XPression there is only one way in which you can have textfields auto-follow eachother, and that is if you're using a crawl. There you could put the first name in one scene and the last name in another and then when you play the crawl, the fields will appear to auto-follow.
Other than that, you'll need to use scripting and then you could use the example above.
Best regards,
Kenneth
#XPression