Best way to modify Postprocess volume settings real time ?

Hello,
I’m all new to UE, and i’m trying to get some settings from a postprocessvolume to respond in runtime, either be it from a blueprint (like oscillating parameters), and the next step would be to be able to control it via dmx inputs…
So far i’ve created a BP with a postprocess and tried "set members in postprocessSettings " and various SET and Make but no luck, i feel i’m missing something. Do i need to refer to a camera ?

Thanks

So, I just put a PP in a BP:

Screenshot_2.jpg

Then you need a MakePostprocessSettings node:

The stuff you tick in the details shows up as a variable on the node. Pipe it into a ‘SetSettings’ node connected to the PP.