Updating Document Stencil based on change to Visio shape

[tucsonfeuer]

I'm toying with some ways to use Visio as a systems engineering tool, and, in this case, want to use the Document stencil as the library from which a person would add components for the system. If I have two shapes "Bob" and "Mary, connected by a connector (with a unique identifier), I'd like them to update across sheets when changes are made, and the Document Stencil works well for this. What I want to do, however, is push changes made on page back to the stencil. E.g., if I change the connector shape label, I'd like it to update in the Document Stencil so changes propagate to other sheets).

Searching the web, I haven't found a way to do this programmatically, such as in VBA. I know how to find out if something has a master, and what the master name is, and that's about as far as I've gotten. Any ideas on how to modify the Document Stencil based on changes to a shape on a page? Also up to hearing other ideas on accomplishing my goals.