public static function create()
 {
     if ($_GET['nextpage'] == 1) {
         $page_1_passed = true;
     } else {
         $page_1_passed = false;
         $error = "";
     }
     if ($page_1_passed == false) {
         $template = new HTMLTemplate("data/admin/value_template/add.html");
         $paramquery = $_GET;
         $paramquery['nextpage'] = "1";
         $params = http_build_query($paramquery, '', '&');
         $template->set_var("params", $params);
         if ($error) {
             $template->set_var("error", $error);
         } else {
             $template->set_var("error", "");
         }
         $folder = Folder::get_instance(constant("OLVDL_FOLDER_ID"));
         $data_entity_array = $folder->get_children();
         if (is_array($data_entity_array)) {
             $result = array();
             $counter = 0;
             foreach ($data_entity_array as $key => $value) {
                 if (($file_id = File::get_file_id_by_data_entity_id($value)) != null) {
                     $file = File::get_instance($file_id);
                     $result[$counter]['value'] = $value;
                     $result[$counter]['content'] = $file->get_name();
                     $counter++;
                 }
             }
             $template->set_var("file", $result);
         }
         $template->output();
     } else {
         $value_type = new ValueType(null);
         if ($_POST['parent'] == "1") {
             $parent = true;
         } else {
             $parent = false;
         }
         $paramquery = $_GET;
         unset($paramquery['action']);
         unset($paramquery['nextpage']);
         $params = http_build_query($paramquery, '', '&');
         if ($value_type->create($_POST['data_entity_id'])) {
             Common_IO::step_proceed($params, "Add Value Template", "Operation Successful", null);
         } else {
             Common_IO::step_proceed($params, "Add Value Template", "Operation Failed", null);
         }
     }
 }