public function displayMultiExport(Request $request)
    {
        $download = new \set_export(
            $this->app,
            $request->request->get('lst', ''),
            $request->request->get('ssel', ''),
            $request->request->get('story')
        );

        return new Response($this->render('common/dialog_export.html.twig', [
            'download'             => $download,
            'ssttid'               => $request->request->get('ssel'),
            'lst'                  => $download->serialize_list(),
            'default_export_title' => $this->getConf()->get(['registry', 'actions', 'default-export-title']),
            'choose_export_title'  => $this->getConf()->get(['registry', 'actions', 'export-title-choice'])
        ]));
    }