No.  Now you have crossed over into sheet sets territory.  The closest you might be able to get would be to create those custom fields then some sort of lisp routine or macro to update the values.  But you'd have to perform the action in each file individually unless the lisp was fairly complex.

Edited by heinsite - 02.Nov.2012 at 19:05

Using sheet sets is one possibility, but you don't have to go that way if you don't want to.  The solution will require modification of your layout template(s) and title block(s) however. 

The first step is to go to DWGPROPS and the Custom tab and create some custom field names.  Use the Add button, name a field, and give it an initial value.  Once you've set up what you need include these fields in your title blocks.  Then when you want to change something common (ex. Proj Nos, Revision dates, Job Name, etc) all you have to do is reset the values one time via the Custom tab of DWGPROPS.  Then a quick REGENALL will update all the values in the drawing file where ever they live.

Give it a shot!

Dave.

If they are attributes, try the command GATTE.