Hello,
Thank you for your reply.
Would it be possible to try the following code to see if it works the same way in your instance?
test={%CurrentDocument.Owner.UserName%}&rss
I have added this to the
Feed querystring key property in the RSS feed Web part and I am able to filter the results with this configuration, by using the querystring macro {%test%}. Please let me know if this works as expected in your instance.
Best Regards,
Sandro