Group that can be duplicated, dynamically

My client requirement is that, after selecting an item on a Select list, he can upload files and descriptions according to that selected item. The idea is to dynamically populate a group that can be duplicated, with the requested data. But as I’ve seen on Bonita, it doesn’t seem possible to dynamically change the amount of group items. How can I achieve this? And, is there any way to consume a REST service from Bonita? Thanks.

Also, I can’t find anything useful about Iterate (a practical example) on the documentation, is there any example of this?

Hello,

You will find these features in Subscription packs.
Connectors on forms (to update values for example) and contingencies (dynamically change amounts or others) are available in Teamwork edition.
You can find more information here: http://documentation.bonitasoft.com/make-field-contingent-another-field

This page about iteration is not helping http://documentation.bonitasoft.com/iteration ?

Hope this helps!

@elodie.jacques I did not mean that kind of iteration, I meant in widgets. Also, I found the solution for my problem, I documented it here: http://robotenlanube.com/?p=109 if anyone gets stuck on this.