Geometry Decals with PCG

Hi, I’d like to make something like that: PCG Geometry Decals
I could build some cubes using PCG around a mesh, but how can I force another mesh to exist based on this grid, thanks for your help, I’m on 5.7 and nodes seems to have changed a little from previous versions

It’s working now, I had to work a little more on this, I choose to build a new project to snap some rocks to the ground, and not forget to drag and drop my BP inside the editor.
Cheers

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