Hey Bob,
Looks weird, we’ll look into it. Out of curiosity, why are you looking at that field? Perhaps there is another way to go about it. I’m partly looking for a work around for you, but there is the additional issue that calling listStreams, particularly when there are many streams, can cause performance issues. If you call that often you can impact the quality of the running streams. It is better to either call GetStreamInfo, or better yet, use an Event Notification.
Best,
Bryan