You are designing a solution that requires a shared variable to initialize on startup before incoming messages are processed. You want to disable the process starter of the process that subscribes to the messages on startup and enable it again when the variable has been initialized. Which activity is used to accomplish this task?

The Engine Command activity in TIBCO ActiveMatrix BusinessWorks can dynamically enable or disable process starters at runtime, which is exactly what the scenario requires. The Wait activity only pauses execution, Notify sends messages to other processes, and Receive Notification listens for messages - none of these control process starter state.