just make your own shared parameter and use that instead. My is called AssblyCode
Acad 2012 and Revit 2012
Win 7 Pro 64 bit
Intel I7-860 @2.8GHz
12GB DDR3 RAM
follow instructions as per the link below (basically editing a .txt file (uniformatClassifications.txt file)
worked for me. i had concrete piles with the assembly description as steel pipes (for some reason)
i closed my revit sessionI, went into the aformentioned .txt file and changed it to concrete.
apologies if i'm talking out of my left ear and misinterpreted what you mean.