V-bus fendt

i’m new on this Forum. I’m a Fendt dealer in Belgium and I have a customer with a 200S3 with frontloader console . So it has 2 proportional valves on it ( on the V-Bus ) . My customer wants to use one of these valves for a hydraulic toplink. But he also wants a button on the back of the tractor to command this valve from the exterior. Can somebody help me how I can externally command this valve on the can bus.
Arduino ? existing program ?

Hey, a few guys already used CAN Valves for leveling the blade of a grader. Not sure about the specific model you have, but it might be worth a look: