Can't add more multifield rows... only 6

Hi,
i created a form with multifield rows (every rows contains 4 text box) as you can see here: http://www.acarzero.com/index.php/it/registrazione-acarzerobugs-wall-area-hotel-multiplo

But I have a problem.
I can only create 6 rows. If i try to add one more text box, when I save the form, it closes without saving more elements and move me to Joomla control panel page.
I'm in the need to create 10 rows...

Any idea?
Thank you.
Emanuele

Hi Emanuele,

Please see this FAQ

Bob