Incluse / Exclude in Light Material

Anyone can guide me how Incluse / Exclude works in Light Material…?
Light Material with HDRI… and added one object in Include slot but light is everywhere, even excluse is same also…!

Thanks.

No One…?

any web manual link…?

Thank.

doesn’t work with the Sky object, it needs mesh geometry (ie. hemisphere or a plane)
eg

giphy.gif

ahhh… thanks. I was with parametric objects…!

Thanks.

p.s.
This can be added features to effect parametric in include and exclude.