How to pass an array to a view in Yii1.1?

Question

Yii

How to pass an array to a view? I didn't find it in the documentation. This is how it doesn't work:

public function actionAdd($id)
{
        $a = array(1,1);
        $this->render('add', array(
              'a'=>$a
));
    }

This also doesn't work:
$this->render('add', $a);