public function postProcess()
 {
     $id = (int) Tools::getValue('id_' . $this->table);
     if (Tools::getValue('submitAdd' . $this->table)) {
         if (Tools::getValue('delimiter1') >= Tools::getValue('delimiter2')) {
             $this->errors[] = Tools::displayError('Invalid range');
         } elseif (!$id && RangeWeight::rangeExist((int) Tools::getValue('id_carrier'), (double) Tools::getValue('delimiter1'), (double) Tools::getValue('delimiter2'))) {
             $this->errors[] = Tools::displayError('The range already exists');
         } elseif (RangeWeight::isOverlapping((int) Tools::getValue('id_carrier'), (double) Tools::getValue('delimiter1'), (double) Tools::getValue('delimiter2'), $id ? (int) $id : null)) {
             $this->errors[] = Tools::displayError('Error: Ranges are overlapping');
         } elseif (!count($this->errors)) {
             parent::postProcess();
         }
     } else {
         parent::postProcess();
     }
 }