Hi all, pls note that the Labtest 05 Package that was distributed has a problem. In the class PolkaDot, if the method is invoked to change the fill setting (true or false), the line that notifies the listeners was missing. Below is the corrected version.
-mb


public void setFilled(boolean isFilled) {
this.isFilled = isFilled;
dataModel.notifyModelHasChanged();
}