function add_object($object, $where = 'all') {

    if ( mb_strpos($where, "next") !== false ) {
      $this->_objs[$object]["start_page"]++;
      $where = str_replace("next", "", $where);
      if ( $where == "" )
        $where = "add";
    }

    $this->_objs[$object]["where"] = $where;
  }