OnRfListenerAdd 
Usage 
- Return a non-null value to override default behavior
 
Example Autogenerated 
csharp
private void OnRfListenerAdd( IRFObject obj, int frequency )
{
    Puts( "OnRfListenerAdd works!" );
}Location 
- RFManager::AddListener(int frequency, IRFObject obj)
 
csharp
public static void AddListener(int frequency, IRFObject obj)
{
	frequency = RFManager.ClampFrequency(frequency);
	if (Interface.CallHook("OnRfListenerAdd", obj, frequency) != null)
	{
		return;
	}
	if (!RFManager.GetListenerSet(frequency).Add(obj))
	{
//---