Stored process, multiple conditions

[waw_pie]

Hello,
I would like to build a report in  stored process (EG). I have a problem writing code / loop in EG.
The report should filter on a few optional fields.
Let's call it:
A
B
C.
D

In the report, I should be able to search either one field or several, e.g. only C, AD connection, ABC connection, etc.

I don't want to list all possible combinations in the code. Could you please help me?

[JosvanderVelden]

Like this https://blogs.sas.com/content/sastraining/2009/11/10/using-multiple-selection-prompts-in-sas-stored-... ?