External |
This property indicates whether this parameter should be hidden from the properties palette when it doesn't have a value.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Property Value
BooleanTrue if the parameter should be hidden when it has no value, False if the parameter should remain visible in the properties palette even when it doesn't have a value. The default is false
