Hi and welcome to the forum!
Just out of curiosity, is there a reason you aren't using the built-in revision table functionality? It will do what you are wanting:
As you can see in the image, you have the option to have the revision info apply to just the one sheet, or to the entire drawing document.
But the simple answer to your question is no. Prompted entry values are only available in the context of the symbol/table/block where they are defined. A better way to do it would be to use the drawing iProperties (standard and custom). Since these are properties of the document itself, they are available on all sheets.
Cameron Whetten
Inventor 2012