sclass DynBigNumber extends Module {
  Number value;
  int fontSize = 40;
  
  transient SimpleLiveValue<S> lvText = new(S);
  
  void setValue(long i) {
    value = i;
    makeText();
  }
  
  svoid makeText() {
    lvText.set(value == null ? "-" : str(value));
  }
  
  svoid start { makeText(); }

  JComponent visualize() {
    ret centerLabel(makeBold(setFontSize(fontSize, jLiveValueLabel(lvText))));
  }
}