Change the Slot number in the Reference manager pragmatically

Recently I wrote a VBA application that changes the sequence of all of my references in a certain file based on there logical name.  It would be nice if I could change the slot number to match the sequence number as this is a practice that I always use for additional clarity in my files.  I have looked through the objectBrowser and was unable to find anything pertaining to the slot (I assumed it would be a property of the Attachment class).

I tried doing a recorded BASIC macro to see if that would reveal the name of the variable:

MbeSetAppVariable "REF", "refEditor.editorBuffer", "1"

I couldn't fined anything relevant related to the Buffer.  Can anyone point me in the correct direction?

Any help is greatly appreciated!