I have 8 sets of fields on each record. Only 1 set at a time need to be shown at a time. The set shown is based on a number entered into a field on the record (ShPrd). After selecting the field to hide/show then go to
Inspector --> data --> behavior --> Hide object when I entered:
Weil Progress Reports::ShPrd * 1
With this the field hides no matter the entry except when there is no entry.