Shared Parameters in Wire Type family

[tkruger761202]

I've added a shared parameter to a wire type family called "Conduit Run Name" for tagging and scheduling home runs in Revit, and I've checked the "Electrical Circuits" category in the Parameter Properties.The tagging works fine, but in an Electrical Circuits schedule, the header appears but the field is blank. Anyone got any idea why, and how to overcome this rather frustrating problem?

[kubsix]

Is the schedule set to "Itemize every instances" in the Sorting/Grouping settings? If that is unchecked the field will be blank until all instances are exactly the same.