How can I get the indirect lighting intensity on specific location using VXGI?

Hi, I want to get the indirect lighting intensity on my actor 's location.
At the first time, I tried to use Lightmass and I got indirect lighting intensity but it needed to build light first.
I have several pointlights and spotlights and they are movable light so I couldn’t use Lightmass
I searched for realtime GI and I found VXGI.
I think maybe it is possible to get indirect lighting intensity on specific location using VXGI.
but I’m not familiar with C++ so I’m not sure and curious how I can get it.
If you have any idea, please reply
Thank you so much.