public class Threshold
{
        private long id;
	private int fireEvent;
	private int rearmEvent;
	private int arg1;//?
	private int arg2;//?
	private int function;
	private int operation;
	private int repeatInterval;
	private String value;//?
	private boolean active;
}

What I want to know is the meaning of "arg1","arg2","value".
Also,when a threshold is added to a dci,does it work immediately(any other work need to do,like setting event policy?)?

Best regards,
Yan