function onmyupdate() {
        $this->init_input();
        $username = $this->input(''username'');
        $myuserid = intval($this->input(''uid''));
        $password =  $this->input(''password'');
        $email = $this->input(''email'');
        $questionid = $this->input(''questionid'');
        $answer = $this->input(''answer'');

        $status =  ENV[''user'']->get_user_by_uid($myuserid);
        if(!$status) {
            return -1;
        }
        $uid =  ENV[''user'']->update_user($myuserid,$username, $password, $email, $myuserid, $questionid, $answer);
        return $uid;
    }