which part of the code actually puts the bumpmapping-effect on the cube

EDIT: I can get it working with this:
Code:

---

ColorOp[0] = Modulate;
ColorArg1[0] = Texture;
ColorArg2[0] = Current;

ColorOp[1] = Bumpenvmap;
ColorArg1[1] = Texture;
ColorArg2[1] = Diffuse;

---

But it won't show the bumpmapefftect well..