don’t really understand your problem completely but the engine handles most cases for you
have you tried setting up the analog stick in the project settings (find it under settings tab at top of viewport) under input then add an input event for whatever you are trying to access?
I’d also suggest a google search for Unreal Engine 4 then the topic or whatever you are trying to accomplish, I’m pretty sure this has been handled before.
probably something like crosshairs &/or scope (sniper) would be a good search to start with.
also always check this if having problems: .unrealengine.com/latest/INT/