I would like to reference the form-filler’s first name in a later form field, the way Typeform does. For example, “Jeremy” would show up here instead of undefined:
Welcome to the Boundless community forums @jeremy!
You can totally do this, it’s just that live updating isn’t active when you’re building the page. To see it in action you need to click “Preview”, where you should be able to see this working.
Also you should probably wrap it in
IF(), maybe like this:
IF(Name, CONCAT("What's a good email for you, ", Name, "?"), "Email") so that it still shows something decent when there’s no name yet. Alternatively you could hide it with a variant until the name has been entered.