Inside closed mesh goal

I have a box that I need to populate uniformly. Apparently, populate 3D gives only random points and not uniformly distributed points. So I used the zombie solver with on mesh and P_Law(repulsive) goals. This makes the points get distributed uniformly on the surface of the box. Is there any goal like ‘inside closed mesh’ to achieve what I need?

You could convert the mesh to a Brep (polysurface) and then apply Point In Brep to a 3D grid of points to cull only those inside.

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The problem with that is it just tests for point inside the mesh and I lose all the points as they get repelled away out of the mesh due to the P_law goal

Without posting your code, I have no clue.

I think the code I posted in this thread might be what you need: