How to create a claim number based on the next available number in Workflow

My client has a Web Form that they would like to have a claim number auto created.  They have claim numbers already in DocuWare so I would need a way to basically look at the last Claim number created and then create the new number incrimenting it by 1.   

Dear Michael Weingand! It looks like the Community cannot answer your question. That's why we have opened a Support Request with the Number SR-246996-J4T8S 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