private int getThresholdCounter(int niveau) {
      switch (niveau) {
            case 1:
                  return 14;
            case 2:
                  return 12;
            case 3:
                  return 10;
            case 4:
                  return 10;
            case 5:
                  return 8;
            case 6:
                  return 8;
            case 7:
                  return 5;
            case 8:
                  return 4;
            case 9:
                  return 3;
            default :
                  return 2;
      }
}