Checkin Name in a Macro

I'm writing a macro to take some action on every model in the Repository, so I'm looping through the diagram list from DiagramManager.RepoDiagrams, doing a DiagramManager.RepoGetDiagram, making the changes, and then doing a RepoCheckinDiagram on each diagram.

When doing the Checkin through RepoCheckinDiagram, the only parameter is the checkin Comment.   I don't see anyplace to provide the 'Change Record:' title (which is shown as 'Name' in the Change Management Center window), and I can't find any other method or property that would let me provide or update that information.

Anybody know of anything I'm missing that would allow me to provide the Name along with a comment?