Are Rev Blocks dumb?

I want to use a variable in my revision block, but it doesn't seem to want to work like a BOM or drawing title blocks.  It puts the date in the revision block, but I also have a number I use and would like that to be placed into a column in my revision block. Currently using EPDM and I push information to the drawing, but the revision block just won't take an attribute.  I am I missing something? Or is this just the way it is?

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