Form validation on update

[eluser]Tomer Simis[/eluser]
Sorry, the views were wrong at some parts. I have edited and now its ok.

Actual form open:

Code:

echo form_open('categories/update/'.$this->uri->segment(3)); //categories/update/4

Its not working, this time it only comes back to the form page with the informations, but when a submit I didn't get any validation error.
please, help me guys