Linking Balloons to BOM Column

Different assemblies in our product use different numbergroups. ie: Main ass'y uses 000-099, Subass'y 1 uses 100-199, andso on. We made a BOM that captures the item #'s for parts modeled.The problem we are having is with purchased parts, fasteners andsuch, these are used in many different assemblies so giving them aproperty of "item 306" to a 1/4-20 x 1.25 lg SHCS won't workbecause it can be used in many different assemblies needingdifferent item #'s. What I think I want to do is link the balloonsto the BOM column with the item # so when I edit the cell of ascrew to 306 the cooresponding balloon would update.
Thanks,
RobSolidworksBill Of Materials