[xwiki-users] passing POST query string

Hi, My xwiki 3.0 implementation is using PHP in many pages, and some pages are based on simple HTML forms with a "submit" button. In the PHP part, I process $request->getQueryString() to check the form fields that were sent. It works very well when the form used the GET method, but doesn't work at all when the form used the POST method. Doing some research, it looks like the getQueryString() method should handle both scenarios but it doesn't, so I wonder if there is anything else blocking the POST data at a lower level. I also did the same test not inside PHP and run into the same issue, so it does not look to be PHP-related. Unfortunately this is becoming critical as GET data size is limited and I start running into this limit on some forms, so have to move to POST. Thanks