public void setWhosHome(String userName, String status) {
		previousWhosHome = whosHome;
		// limit the number of users to 2
		if (this.whosHome.size() == 2 && status.equals(Message.STATUS_HOME) && (!whosHome.contains(userName))) {
			// ignore whatever is sent in
		} else {
			// if status is home, we add/keep the username
			if (status.equals(Message.STATUS_HOME)) {
				if (!whosHome.contains(userName)) {
					whosHome.add(userName);
				}
			}
			// else if the status is away, we remove/don't add username
			else if (status.equals(Message.STATUS_AWAY)){
				if (whosHome.contains(userName)) {
					whosHome.remove(userName);
				}
			}
		}
	}