problem changing the language

[eluser]keevitaja[/eluser]
i must be really stupid or missing something...

Code:

<?php

//$config['language']    = "english";
//$autoload['language'] = array();

class Test extends Controller {
  function index() {
    $this->load->library('language'); //must be loaded, otherwise get the error
    
    $this->lang->load('site');
    $this->config->set_item('language', 'estonian');
    $this->language->reload();
    
    //$this->lang->load('site', 'estonian'); //redeclared after reload gives no results!
    
    echo $this->lang->line('site_username'); //still prints the english version
    
    //site_lang.php present in estonian and english folders
    //changeing the config.php file will do the job!
  }
}