Cookies & parameters

Rob77

Hello,
How can I remember previous parameter values when viewing BIRT reports in browser? It works fine when previewing within Eclipse IDE, but when deployed to Tomcat (5.5.1 IIRC) after pressing F5 (or ctrl-r - refresh) in Firefox on generated report, I get parameters screen with nothing selected ...
I guess it may be cookies related, but haven't found anything on the net. Only some reportcontext API, allowing reading cookies, but it doesn't let store them ... So I guess it must be something related to server configuration, but have no idea what and where to change.
I don't know if it matters that my parameter fields are dynamic (fetched from data source).
Any help would be appreciated.

Regards,
Robert