Export geometry with Attribute User Text as UserData in FBX

Hello there, I am looking for a way to export geometry in FBX with the Attribute User Text of each object. I want to import the geometry with its metadata into UE4 but I havent find a way to keep the Attribute User Text after the export.

Thank you!

Currently not possible, but I have logged your request: https://mcneel.myjetbrains.com/youtrack/issue/RH-55998

Thank you, it would be very helpfull to use this feature with grasshopper.