[rules-dev] Controlling Web Page(JSP) controls/fields using drools

Hi, I have a scenario where there are different user roles for a web application. Depending on a user role a field in a web page (say jsp) could be enabled or disabled for the user. I would like to introduce drools here to control the fields, where given a role, drools would decide whether a field should be enabled/disabled for the user.Any ideas on how to approach this please?