[TYPO3-project-formidable] Testing Formidable "How to use validators".

[Ian Solo]

Hello,
I just started to study Formidable and I have a little problem:

I'm following this tutorial [1], I can display the form in the FE but, 
when I submit the form, the page doesn't display any error and I can't 
figure out the reason.

Any ideas?
Thank you in advance for your time and for this great framework!
ian.

[1] 
http://formidable.typo3.ug/typo3-form-news/news/0018-how-to-use-validators/start/1209053490/back/2.html