button to add fields in a form at runtime?

Hello,
I'm starting a new project (a complex one page form) and I would like to know if I can do it with Data assist.
I'll try to explain it:
I will need to build a standard form with usual fields and add the ability for the user to add other fields (like this example: http://jsfiddle.net/HEaq5/1/). It is basically a repeatable region inside the form.
I think I can tweak the fiddle to get the form working but then I will need to send the form via email and save the result in a database.
Is there a way to do this with WA?
I'm not asking the project done, just some indications or suggestions on how to do it.
Thanks in advance to all of you.
Tony

It is going to take some hand coding, but you can use the foundations from the webassist extensions. I'd probably use Form Builder and MySQLi server behaviors to get it working with one of the fields and then add a loop to account for the additional fields that may have been added by the user.

The webassist email server would automatically work with repeated fields, so that part should be easy.