JID room = new JID(data.getData().get("room").get(0));
Date time = DataForm.parseDate(data.getData().get("time").get(0));
boolean includePDF = DataForm.parseBoolean(data.getData().get("includePDF").get(0));
// Get archive searcher module
ArchiveSearcher archiveSearcher = (ArchiveSearcher) plugin.getModule(ArchiveSearcher.class);
ArchiveSearch search = new ArchiveSearch();
search.setParticipants(participant);
search.setIncludeTimestamp(time);
search.setRoom(room);
Collection<Conversation> conversations = archiveSearcher.search(search);
DataForm form = new DataForm(DataForm.Type.result);
FormField field = form.addField();
field.setType(FormField.Type.hidden);