require_capability('moodle/course:manageactivities', $modcontext);

                        require_once($CFG->libdir . '/gradelib.php');

                        $cm = get_coursemodule_from_id('', $id, 0, false, MUST_EXIST);

                        $module = new stdClass();

                        $module->id = $cm->instance;

                        // Escape strings as they would be by mform

                        if (!empty($CFG->formatstringstriptags)) {

                            $module->name = clean_param($title, PARAM_TEXT);

                        } else {

                            $module->name = clean_param($title, PARAM_CLEANHTML);

                        }

                        if (!empty($module->name)) {

                            $DB->update_record($cm->modname, $module);

                            rebuild_course_cache($cm->course);

                        } else {

                            $module->name = $cm->name;

                        }

                        // Attempt to update the grade item if relevant

                        $grademodule = $DB->get_record($cm->modname, array('id' => $cm->instance));

                        $grademodule->cmidnumber = $cm->idnumber;

                        $grademodule->modname = $cm->modname;

                        grade_update_mod_grades($grademodule);

                        // We need to return strings after they've been through filters for multilang

                        $stringoptions = new stdClass;

                        $stringoptions->context = $coursecontext;

                        echo json_encode(array('instancename' => html_entity_decode(format_string($module->name, true,  $stringoptions))));