Journal approval rule for checking if attachment exists at batch level

Goal - To auto-reject journals without any attachment at both batch level and header level.

I have got the attribute to check for attachments at Journal header level and it works - "Journal Header.Attachments Exists.toUpperCase()"

But I'm unable to find any similar attribute at batch level. I went through this discussion - (Doc ID 2392988.1) and they suggested to use "Task.payload.addAttachmentStatus.toUpperCase()" but its not working. Can anyone please suggest anything on this?

https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=294408166741238&id=2392988.1&_afrWindowMode=0&_adf.ctrl-state=d5rwlivin_4