Attachment description not coming in sap workflow mail step

I created bor instance for tcode and passing it to mail step.

I assigned attach_objects to attachment of mail step in workflow.

All data coming as well attachment but problem is description of attachment not visible in mail.

Same issue in thread https://archive.sap.com/discussions/thread/3701184

Same issue in the thread only description addition not explained refer last reply

Please tell me to add description to attachment thanks in advance.