Linking balloon position to a drawing zone reference

Hi
Does anyone know if it is possible to get the co-ordinates of anassembly item balloon off a drawing which could then be used tocreate a Zone or Grid reference on the BOM.

When you have big assemblies it can be very difficult to locate theballoon for a BOM entry and a linked property would obviously giveyou a reference which constantly updates (can't say I've worked outhow you would deal with multiple balloons of the same number)

Thanks

NeilSolidworksDrawings And Detailing