Has anyone sucessfully added a dialog topic to an idle marker (under the Patrol Data tab) and gotten it to work? If so, please tell me how you did it.

Or, has anyone seen anywhere in the vanilla esm where this is done that I can pick apart? The wiki simply says:
Patrol Data

Only available on http://www.creationkit.com/Idle_Markers and http://www.creationkit.com/Furniture. Allows you to specify how long a http://www.creationkit.com/Patrol_%28Procedure%29 stays at this patrol point, and a dialogue topic to say when they arrive.
The Result Script field is no longer used.

However, nothing I have tried works, and others have said they couldn't get it to work either.

It would be nice if a dev could give us the difinitive answer so we're not chasing something that don't work.