BP_LightStudio separate brigthness for Emission and Visible background

Development Rendering
, , ,
1

I am not good in Blue Prints in UE4.
I use BP_LightStudio for HDRI lights, but I need to have separated HDRI brightness setting for

  1. EMISSION for scene light
  2. BACKGROUND as a image visible on the horizon

In typical ray trace renderer I am able to separate rays for Camera ( as Background image ) and Emission ( for scene light ) and set parameters of background and light separately using the same HDRI.

How to do it in UE4. Is it possible here ?