InfoPath Dev

I'm running Sharepoint 2010/Infopath 2010 and I'm having a problem setting it so that only members of a certain UserGroup can see certain fields.

 I have tried following these guides to the letter, but none of them have worked so far:

http://blog.henryong.com/2012/06/06/security-trimming-infopath-fields-with-sharepoint-2010-infopath-forms-services-based-on-sharepoint-user-groups-claims-based-authentication/

http://blog.symprogress.com/2011/05/infopath-list-form-hidedisable-fields-based-on-sharepoint-group-membership/

http://info.akgroup.com/blog-0/bid/69277/InfoPath-Restrict-visibility-to-users-in-a-SharePoint-Group

Does anyone have a tried and tested method of doing this?

Hi-

Can you elaborate on why these aren't working?

I imagine there could be a problem with the information returned by the user profile web service. Have you tried displaying the Result of that data connection onto the canvas to look at the information being returned?