Best way for getting form values

[eluser]LuckyFella73[/eluser]

Code:

$this->form_validation->set_value('login')

Afaik this line is just to SET the value. If you look
at the code in tank auth it's not processed furthermore.
I don't know why he had this at all because if you run
the form_validation all values of the fields defined in
the rules are set automatically.