Session between controllers

[eluser]ping timeout[/eluser]
I've changed my code:

Code:

//$username = array('username' => set_value('username'), 'logged_in' => TRUE);        
            //$this->session->set_userdata($username);
            $this->session->set_userdata('username',set_value('username'));
            $this->session->set_userdata('logged_in',TRUE);
            echo $this->session->set_userdata('username');
            //$this->load->view('personal');          
        }

And it just shows a blank page.
And if I let this:

Code:

//echo $this->session->set_userdata('username');
            $this->load->view('personal');

It shows the Hello $username message and anchor.
I've tested with:

Code:

echo $this->session->set_userdata('username');
            $this->load->view('personal');

And the message is just Hello, no $username or anchor.