What was the problem? How can reproduce the problem, so I can test the solution?

Hi,I need fix the file
\htdocs\modules\system\admin\users\main.php
On the page https://XOOPS/modules/system/admin.php?fct=users
click Advanced search
Can not find user.
Because the input name="username" but in line 491 is Request::getString('user_uname');
And line 669：if (Request::hasVar('user_name_match')) {
need change： if (Request::hasVar('user_lastlog_more','POST')) {
This part should check the variable user_lastlog_more instead
And line 670、679、680
Finally, on line 831, we need to decide whether to use name="user_uname" or name="username"

Thank you!