DW Workflow - e-mail activity. Attach another document?

Is there a way to attach another document (not the one that triggered the workflow instance) to an e-mail within DW workflow?
Has anyone tried this? and hopefully succeeded? If not, has this been posted as an idea?

Dear Josef Zayats! It looks like the Community cannot answer your question. That's why we have opened a Support Request with the Number SR-125363-H1N9F for you. A Software Support Specialist will contact you directly to follow up. We will update this thread with the solution as soon as we have resolved the Support Request. With best regards, DocuWare Support Team