ParameterCascadingHierarchyPicker.setParameterValueOnChange Property
Gets or sets a value indicating whether the value should be set on change, or after the drop-down-list is closed.
By default, it is not applied on change, so that users can check off multiple items then blur the control to get the value
to change.
Property Value
Type: Boolean
Whether or not the parameter value will immediately set whenever they change the hierarchy.