I’m working on a transactional workflow for collecting some information and the signature on invoices. During the first step, on the way out to my mobile device, I save a unique ID for each document and then download to COTG. Another workflow uses this unique ID to retrieve the data and generate the web content seen on the mobile device. I’d like to be able to generate PDF on demand with a button on the form, so how can I embed this same unique ID in the form so when someone clicks the “Create PDF at HQ” button, the unique ID is included in the XML I get back?