Gents, I was hoping someone would be able to clear up what appears to be an obvious omission from IES. If I execute the playback application on a channel via IES, I get an immediate response to indicate it was queued, and I then have to wait for either PLAYBACK_STOP or CHANNEL_EXECUTE_COMPLETE. The problem is, the response contains nothing to filter events by. The only link I have are the 'Application' and 'Application-Data' fields on the event, and there is no guarantee those are unique to an individual application execution. I would expect the immediate response to return a UUID which would be present on the related events. Am I missing something, or is this actually a bug? Example: https://gist.github.com/40f079ae2a079abe6393 Regards, Ben Langfeld