/**
  * Update
  *
  * @param Doctrine_Record $logo
  * @param array   $data
  * @return string $uuid
  */
 protected function rec_update($logo, $data)
 {
     $this->check_authz($logo->Inquiry, 'write');
     $this->require_data($data, array('logo'));
     try {
         $logo->set_image($data['logo']);
     } catch (Exception $e) {
         throw new Rframe_Exception(RFrame::BAD_DATA, $e->getMessage());
     }
     // save
     $logo->save();
     return $logo->img_uuid;
 }