TheThingSubscription..::..ContinueMatching Property
If no ThingMID is specified, all things that match on ThingAddress.EngineName and the Properties in PropertiesToMatch will be added.
If ContinueMatching = false: the match is performed only once and any new things that get created later will not be included
If ContinueMatching = true, any new things will get added as they appear.
Namespace:
nsCDEngine.Engines.ThingServiceAssembly: C-DEngine (in C-DEngine.dll)