Find first hand of control type in leap motion core asset 4.3

[kenangstadini]

i use the core asset leap motion unity 4.3.0 and get a problem to find first hand controller. error
Assets/script/PlayerMotor.cs(53,28): error CS0117: Leap.Hand' does not contain a definition forInvalid'
how to fix it?

if (LEAPcontroller.IsConnected) {
		Frame frame = LEAPcontroller.Frame ();

		//Find first hand of control type
		Hand controlHand = Hand.Invalid;
		foreach (Hand hand in frame.Hands) {
			if ((hand.IsRight && rightHandControl) || (hand.IsLeft && !rightHandControl)) {
				controlHand = hand;
				break;
			}
		}