Yes, finally. Just when I was going to my bed, I decide to give it just one more try. It is working now. But it gives me some limitation. For instance, you use a called model floor.mdl as water. He only has 4 vertexes and two faces. And I need to use a terrain with 2025 vertexes. With my terrain, the effect is realy terrible.

This is with your floor.mdl:


This is with my terrain: