user name not show.

[eluser]harshitha[/eluser]
I use this code to dispaly login user name.but it is not working..

echo 'Welcome to the private area user: '.$this->session->userdata('user_name');

this show only "Welcome to the private area user:" Message .please help me

Thank you,

Hasitha Bandara Athauda.

[eluser]Genuine Scope[/eluser]
Make sure to set the session variable ('user_name');
Eg: $this->session->set_userdata(array(
'user_name'=>'genuinescope'
));

make sure to add library in your controller
$this->load->library('session');

OR
make sure to add 'session' in autoload.php (system->application->config->autoload.php)
$autoload['libraries'] = array('session');