Thank Luoy for your time!
But problem still here… only the field from the last post i retrieved, and replicated trough all the post in the archive.
You can see the issue here:
http://www.lotrovi.com/prov/cat/eventi/
The theme support says they " have absolutely no experience with this plugin. Contact rather their support because I cannot know how this plugins works and what functions it uses."
I decide to use Types because i'm planning to buy the full Toolset, if the site project works as expected.
Didi you think this issue is theme- or plugin -related?
Thanks