Adding layout CrystalReport to System Form

Hi,

I successfully added layout report to a User form but when adding it to System form like Delivery, the form doesn't have my report listed in the layouts so I can't print it.  What is the small trick I have to do so the System Form is aware of my report ?

http://scn.sap.com/people/mariatrinidad.martinezgea/blog/2011/10/03/associate-a-crystal-report-to-your-own-form