Add Custom Menus To Single Workbook Only

Using example code from Adding Custom Menus, I now have functional menu items that call my macros appropriately. The example also contains code to add or remove a menu conditional on its window being active. What I need is a slight variant on this but not quite obvious to my novice brain.

The add and remove menu code is now stored in my personal.xls file. However, I need that the condition check that a key string be present in the name of the active window, not the file where the macro is stored.

Thus, if the front window is of the file named MyData, then the special menus get added (the conditional string is "MyData"). If the window is named YourData, the special menus get removed. Note, neither of these two files contain any macros.