Undefined variable: MyBBI + Call to a member function login() on a non-object

[eluser]Evollution[/eluser]
nam inteles eu ceva

Code:

class MY_Controller extends CI_Controller{
  
   public $mybb;

   public function __construct()
   {
       require_once '/home/fifagoc1/public_html/go/forum/global.php';
       require_once '/home/fifagoc1/public_html/go/application/libraries/MyBBIntegrator.php';
       $this->mybb = new MyBBIntegrator($mybb, $db, $cache, $plugins, $lang, $config);
   }

}

asta trebuie so postez ca librarie