VoxelSniper help?

I recently installed sponge and downloaded the latest version of VoxelSniper (446). I started to work on a map but after a bit i realized that the overlay brush (/b over d#) wasn’t working at all with gunpowder (it was doing the same job of arrow instead of adding layers) any help?

You should ask in the specific topic. VoxelSniper - Long Range Terrain Editing [v8.0.0] [1.8.9 // 1.10.2]

Edit: And double posting doesn’t help either.