Using Vive face buttons to change volume of in game TV

Hi

I’ve been playing around with the VR preset blueprints - after picking up an object, im hoping to use it to do something specific triggered by that object - ie: pick up TV remote (this has been achieved fine), but then use facepad buttons 1 & 3 to increase or decrease the volume of audio playing off an in game TV. I have mapped my action inputs already, but now kind of stuck.

I only want to be able to do this when i am actually holding the remote in game - so im assuming (using the template), something needs to be added after the object (TV remote) mesh has been attached to the controller component.

Any thoughs from you VR devs out there!?

Thanks