how reflection proxy volume work?

Hi guys,

I am currently exploring HDRP, I have no idea how reflection proxy volume work,? it seem nothing happen to me when i put together with reflection probe, kindly let me know how it function and the purpose to use this. Thanks a bunch!

I’d like to second this - if I put an RPV in, nothing happens. A box? Nope. A Sphere with a size of a million, nothing. Infinite? Still the same! @gooi did you ever make it work?