How to print string when pressing left and right special buttons on pad 00, and also for pad 01???

On an empty Title screen level, I have an actor bp named “Dummy” dragged into the map, this executes some widget and other code.

Off of Begin play I got all active users, got a copy, printed string, and it showed this.
Image1

So UE sees the devices. Great! Now how to weld device 0 to PC_00 player controller and device 1 to PC_01 player controller? That is the question. Does anyone know? bump bump…