All right, I think this should be the beginning of a Mediator in VL.
13_MediatorPattern.vl (38.2 KB)
I’m not sure if the Notify node can be putted inside of the ConcreteMediator node. This would need some kind of “this” maybe (another forum topic is mentioning that feature). Also it is unclear to me how to properly make use of a SetMediator in a data flow context. Will see.