Does anyone know if it is possible to pass the file path of the selected document to a form embedded in a tab? I have tried %(filepath), %(Entry Path) and a bunch of others, but none of them work for me. 

Thanks! 

How do I add multiple parameters?

There was a solution demonstrated recently in the SP Open Forum, it was on prem but they said it could work for LF Cloud too.  The solution showed a BP form embedded in a custom tab, a user could go to a document in the repository, open the meta tab on the right and use a form to update fields on that record, sounds great - a much nicer way of guiding a user to update meta by displaying the relevant fields for amendment in a form. But could this really work?

When a document is opened, it is locked. Could a business process update fields on a record when that record was open as would be the case if the workflow is triggered from inside the record itself? Are there any examples of this working in cloud?

The example was a college who used LF to import student records that had a complex array of collections of semesters, course history and grades and used a capture process to read in the records from other institutions when a student transferred in from another college. The BP form simplified dealing with the meta stored in collections and was embedded as a custom tab