Hello,
We unfortunately don’t have any current plans to support RTMP URI variables.
Shared objects happen transparently across RTMP connections. You simply need to instantiate the shared object in the flash player/app and associate it with the open connection. Modifications to the shared object will be reflected across all connections associated with the same source stream.
Please note: shared objects currently only works when the EMS is run in "console mode". Shared objects for "daemon/service" mode has been fixed for the upcoming 1.6.5 release.
Bryan