Join form-Add field after specific value selection

Hello,

I would like to modify the join form and profile form. I would like to add some select box. When a specific answer is selected on the select box, I would like to show a text box to let the user enter some complementary information about the answer selected in select box. How can I do that? I can use the Profile Field builder, but I cannot show a field only after selected a specific value in another one.

Thanks

You're going to need a mod. Just go to the market and search for "advanced join". This might work:

http://www.boonex.com/m/Dependent_Fields

Niiiiiicceee! Thanks mscott!