public Integer renameSigns(String newName, Integer timerID) {
		Integer changed = 0;
		DB_StartSign startSign = this.getStartSign(timerID);
		DB_StopSign stopSign = this.getStopSign(timerID);
		if (startSign != null) {
			Sign sign = this.getSign_Start(startSign);
			if (sign != null) {
				sign.setLine(1, newName);
				sign.update();
				changed++;
			}
		}
		if (stopSign != null) {
			Sign sign = this.getSign_Stop(stopSign);
			if (sign != null) {
				sign.setLine(1, newName);
				sign.update();
				changed++;
			}
		}
		return changed;
	}