STREAM_SOURCE

Payload	stream name (string)
Response	when-blocking
Response Action	A non-empty response will set the stream source to the response value. An empty response will cause the stream source to not be changed from the normally configured stream source.
Stream Specific	true
When	When a stream's source setting is loaded
Argument	null

Response: Whether a response is required or ignored. If always a response is needed to continue, if ignored the response will be ignored.

Response Action: What will happen if the trigger is given a certain response. If the response action is none then the trigger cannot directly interrupt the server flow.

Stream Specific : Whether the trigger applies only to selected streams (or all if none are chosen) or whether it always applies.

When : The timing of when the trigger activates.

Argument: If applicable, when the trigger should activate.

If you're having issues working with the trigger we recommend reading up on the Trigger introduction.