code: public void setEveryWorkingDay(final boolean isEveryWorkingDay) {
  
          if (m_model.isEveryWorkingDay() != isEveryWorkingDay) {
              removeExceptionsOnChange(new Command() {
  
                  public void execute() {
  
                      m_model.setEveryWorkingDay(Boolean.valueOf(isEveryWorkingDay));
                      m_model.setInterval(getPatternDefaultValues().getInterval());
                      onValueChange();
                  }
              });
          }
      }
docs: Set the "everyWorkingDay" flag.
  @param isEveryWorkingDay flag, indicating if the event should take place every working day.