public String status(Integer denomination) {
		CashMachineSystem cash = (CashMachineSystem) cashSystem;

		switch (denomination) {
		case 100:
			return "$100 - " + cash.getQuantityOfValue(0);
		case 50:
			return "$50 - " + cash.getQuantityOfValue(1);
		case 20:
			return "$20 - " + cash.getQuantityOfValue(2);
		case 10:
			return "$10 - " + cash.getQuantityOfValue(3);
		case 5:
			return "$5 - " + cash.getQuantityOfValue(4);
		case 1:
			return "$1 - " + cash.getQuantityOfValue(5);
		default:
			return "Invalid Command";
		}
	}