Session overwriting Session of another system

[eluser]soprabaixar1[/eluser]
Thanks, it worked.

I do not understand why I can change some config session doing this:

Code:

$this->session->sess_expiration = 10800; // 3h
$this->config->set_item('sess_expiration', 10800); // 3h

But when I try to do the same for "sess_cookie_name" does not work.