CakePHP Questions

Hi, here is my problem:

I send an email using a Shell which is done by a Cron job.

Nothing special, unless I'd like to use a template for my email where I send several variables using set() method.

This is how I do it:

App::import('Core', 'Controller');
App::import('Component', 'Email');
$this->Controller =& new Controller();
$this->Email =& new EmailComponent(null);
$this->Email->initialize($this->Controller);

$this->Email->charset  = 'ISO-8859-1';
$this->Email->to = $winner['User']['email'];
$this->Email->subject = 'Félicitations!';
$this->Email->from = 'blabla <blabla@gmail.com>';
$this->Email->template = 'winner';
$this->Email->sendAs = 'html';
$this->set('winner', $winner);
$this->Email->send();

And Cron sends me back:

Fatal error: Call to undefined method WinnerShell::set()

Could anyone help me with this?