Screen data handling in Screen Enhancement with BAdI's ?

Hi all,

I'm trying to build a Screen Enhancement with (new) BAdI concept.

But now I'm having a Problem. The new BAdI's don't allow variable Attributes  (instance/static attribute) in the BAdI Interface.

If I try to define an instance or static Attribute for the BAdI-Interface I get the following error message:

"BAdI interface <my_badi_if> contains non-constant attributes "

In my Screen Enhancement I have build a Subscreen with new fields in it. These field data couldn't be saved in the BAdI class (e.g. via BAdI-methods my_badi->get_data_from_screen... and my_badi->put_data_on_screen...) because having no attributes.

How these screen-data could be handled without BAdI-Interface-Attributes?

Thanks in advance,

Anja