Ladybug & Anemone

Hello members of the Rhino/Grasshopper community,
I need your help please.
Objective of my work: create a level of voxels that receives a defined number of sunlight hours. This voxel level can later provide shading for the voxels (second generation) located below.
My problem is that , although I defined that only the second-generation voxels receiving less than 7 hours of sunlight should be saved and remain, the Anemone plugin did not give me this possibility.
I have posted a representative video that shows that there are cases where the faces receive less than 7 hours of sunlight and yet they are not energized.
Please help me.
Anemone_voxel.gh (81.0 KB)