Allows users to subscribe/unsubscribe directly to the global parameter change event. Any parameter change will raise this event to notify those registered.

Event ParameterValueChanged As EventHandler(Of ParameterValueChangeEventArgs)

event EventHandler<ParameterValueChangeEventArgs> ParameterValueChanged

 event EventHandler<ParameterValueChangeEventArgs^>^ ParameterValueChanged {
	void add (EventHandler<ParameterValueChangeEventArgs^>^ value);
	void remove (EventHandler<ParameterValueChangeEventArgs^>^ value);
}