New Revision Table Column Populated By WPDM User

I'm struggling to find a way to do this. I've added an extra colum to my revision table that needs to be populated with the initials of the person who made the change to the part/assembly. Since PDM stores in Document Information the User that makes each change to the file, I was hoping this could be used to populate the new column.

Any help would be appreciated.

Chris

SolidworksWorkgroup Pdm