public override void UpdateProviderFromPropertyValues()
{
//prop["SimpleDisplay"] = "(weekly time ranges)";
string sun = prop["Sun"];
string mon = prop["Mon"];
string tue = prop["Tue"];
string wed = prop["Wed"];
string thu = prop["Thu"];
string fri = prop["Fri"];
string sat = prop["Sat"];
WeeklyTimeRange wtr = new WeeklyTimeRange();
wtr.AddTimeRange(zDayOfWeek.Sun, TimeRange.FromString(sun));
wtr.AddTimeRange(zDayOfWeek.Mon, TimeRange.FromString(mon));
wtr.AddTimeRange(zDayOfWeek.Tue, TimeRange.FromString(tue));
wtr.AddTimeRange(zDayOfWeek.Wed, TimeRange.FromString(wed));
wtr.AddTimeRange(zDayOfWeek.Thu, TimeRange.FromString(thu));
wtr.AddTimeRange(zDayOfWeek.Fri, TimeRange.FromString(fri));
wtr.AddTimeRange(zDayOfWeek.Sat, TimeRange.FromString(sat));
currentValue = wtr;
FireValueUpdateEvent();
}