Custom event - adding Document in message data

[Former Community Member]

Hi,

I'm trying (without success) to add a document variable into the message data of a custom event.

I have tryed to define in schema an element having no type, and then to put directly the document using the data mapping.

All the process is working except the fact that the passed content (a form) cannot be  readen as passed.

Do somebody have an advice to achieve that?

Thanks for your help

Denis