previous version of a Document in SAIL

hi @akkramanir,
thanks for suggestion, but that's exactly what I was trying to avoid with my question :)
in my use case I already have a relationship between different documents, so I don't want to add different rows in the DB just for the version change.
what I need is to use the Appian versioning, and when a user select a document from a grid in SAIL, to show somewhere else (in another grid maybe) the list of previous version for that document.. but without having different documents as version