Code:
material mtl_vegetation
{
        event = mtl_vegetation_init;
        effect=
        "
        texture entSkin1;
        dword mtlSkill1;
        technique vegetation
        {
                pass p0
                {
                        Texture[0] = <entSkin1>;
                        ZWriteEnable = True;
                        AlphaBlendEnable = False;
                        AlphaTestEnable = True;
                        AlphaRef = <mtlSkill1>;
                        AlphaFunc = Greater;
                        CullMode = None; // CCW or None
                        ColorArg1[0] = Texture;
                        ColorOp[1] = Add;
                        ColorArg2[0] = Diffuse;
                }
        }
        technique fallback{pass p0{}}
        ";
}

action vegetation
{
        my.transparent = off;
        my.material = mtl_vegetation;
}
Was it this one ? If not sorry

Acknex umgibt uns...zwischen Dir, mir, dem Stein dort...
"Hey Griswold ... where u gonna put a tree that big ?"
1998 i married my loved wife ... Sheeva from Mortal Kombat, not Evil-Lyn as might have been expected
rayp.flags |= UNTOUCHABLE;