Our current setup in Microvellum is to have one drawing page per room. Some of our projects contain 50 or more rooms, and if we ever need to make a change to our title block info, it becomes very tedious. The only way to do it that I'm aware of is to open each room and click the "Update Title Block" button on each room individually. 

Does anyone know if the "Update Title Block" button is accessible as an AutoCAD command? 

I'd like to create a LISP or VBA routine that opens up each dwg file in the project and runs this command automatically, but I can't find the written command for it - like MVMove, MVCopy, ect. There doesn't seem to be a MVUpdateTitleBlock equivalent.