when i customize the startattempt.php page , that problem solved.But i dont want to take risk. so i created a new table and enter the feedback into that table.I think this will be more helpful while upgrading the moodle.Now i added form elements by using html_writer::start_tag functions.I added textarea by this method.can i change that textarea into our tinymce edittor by using html_writer::start_tag method?
Thanks
Jerin