I have one List to collect Names of Staff. It is created and maintained by one of the site Admin. The names of staff are retrieved through database join from non-fabrik table. To retrieve userid, the hidden Calc element is used, which is working fine. The name of calc element is userid. I want to display the data of this list to the logged user with same joomla userid. This is filter used. Somehow, the pre-filter is not working. What could be the reason ?