function updateAllSoc(&$PDOdb)
 {
     global $langs, $conf, $user, $db;
     $TUser = TCommercialCategory::getUser($PDOdb, $this->fk_category);
     // useless, just for popup
     $nb_user = count($TUser);
     $TSociete = TCommercialCategory::getSociete($PDOdb, $this->fk_category);
     $nb_soc = count($TSociete);
     foreach ($TSociete as &$soc) {
         self::updateSociete($PDOdb, $soc);
     }
     setEventMessage($langs->trans('CategUserAffectation', $nb_user, $nb_soc));
 }