> What am I missing?

Tom,

Tkae a look at the current version (3.02) of the Developers Guide. On pages 55-56, they talk about "Specifying and Creating View Parameters". Go into your bizobj class (HistoryObjSingle) and in the PostInitHook method, add the code as shown. You then need to add a new property to your bizobj class. The manual uses cCountry as an example, you could call yours cSingle.

Then in the form you could say:

ThisForm.HistoryObjSingle.cSingle = "1"
ThisForm.HistoryObjSingle.Requery()

Kind Regards,

Mat Kennedy
Decision Support Technology Inc.