URL Negative Rules access not working

I am trying to restrict access to a page via the URL Group. - restricting access to certain a certain user role.

I created a URL group called "SEARCH" and listed several pages:


(the sresults.php page displays results from a query)

I have tried including the URL Group selected in the NEGATIVE rule by dragging the URL box to the negative rules and checking the box beside the "SEARCH".

It is not restricting access to this page. Any suggestions?