I've told Assistant how to do some transformation on files. I've attached files and told it to transform. It does so.
Then I attach 1+ file(s) and tell Assistant to "Transform this" or "Transform the attachment" or some variation. Instead of using the attachment(s), the Assistant thinks it is working with the previous files and ignores any attachment(s).
The Assistant to recognize I want to perform an action on the files I am attaching.