Blank Screen using sessions...

[eluser]jenie_net[/eluser]
Hi all!

I've got a controller Login.php

Code:

<?php

class Login extends MY_Controller {

    function Login()
    {
        parent::MY_Controller();
        $this->load->helper('security');
        $this->load->helper('form');
        $this->load->model('User_model');
    }
    
    function index()
    {
        $this->_header_ajax('Authentication required:');
        $this->load->view('public/login_view');
        $this->_footer();
    }


    function authenticate(){
        $data = array(
               'username' => $this->input->post('username', TRUE) ,
               'password' => $this->input->post('password', TRUE),
                    );
        $result=$this->User_model->authenticateUser($data);
        if ($result != NULL ){
            /*    Settare gli attributi di sessione     */    
            /* $res_sess = array(
                                            'logged_in' => TRUE
                            'role' => $result->role;
                           );
            $this->session->set_userdata($re_sess); */        
            

                   redirect('protected','refresh');
        }
        else{
            $this->index();
        }
        
    }
    
}
?>

This works well until i leave comments on this parts

Code:

/* $res_sess = array(
                                            'logged_in' => TRUE
                            'role' => $result->role;
                           );
            $this->session->set_userdata($re_sess); */

If i delete comments, i have a blank screen while attempting to

http://mysite.com/index.php/login

(The strange thing is that i'm in index() while i call login without parameters...
and the code is in authenticate function..)

Any help?

Thanks in advance...

Stefano Marino