Populate Geometry & Attraction Point Help

Hi, everyone.

I'm stucked in the middle of the boxes :) What i try to do is creating random points to "add boxes" on surfaces of brep geometry. I finished this part using the attached definition. As you can see on images, i use attraction point to control the size of each box in each point related to the distance. But when box goes small, gap between boxes (=points) increase. Likewise the biggest boxes, the most crowded areas i get. I want to change this situation as gradient as possible but how can i manage?