model from stored procedure result

Whats wrong with this code?


$myproc = "Exec disponibilidades " . $cod_casa;


        $command = Yii::app()->db->createCommand($myproc);

        

        $rows = $command->queryAll();

        

        Preco::model() = $rows;


       

        foreach ($rows as $preco):

            echo Preco::model()->cod_casa;

        endforeach;