internal EMSXFieldDataPointSource(EMSXField field)
{
this.field = field;
this.value = field.value();
this.field.addNotificationHandler(this);
}
internal EMSXFieldDataPoint(EMSXField source)
{
this.source = source;
System.Console.WriteLine("Adding field notification handler for field: " + source.name());
source.addNotificationHandler(this);
}