field := %_folderpath_rel%

How in an Action may I set a field to the relative (to current directory) folderpath?

On V2.30o in Action %_folderpath_rel% returns null. I workaround manually by using Export (where %_folderpath_rel% works, but relative to the Export file only, whose location I then have to contrive) then Text file - Tag, but this is not Action-able.

Thanks.

I find simple cases can be handled using %_workingpath%.