How to Use CustomMaterial??

i want apply multi-pass material to my character dts.
but did not apply material.
i don't understand custommaterial..

this my original material code.

new Material(test_mat)
{
   mapto = "test_mat";
   baseTex[0] = "test_mat";
   specular = "1.0 1.0 1.0 1.0";
   specularPower = 16.0;
   version = 2.0;   
};

and i changed material to custommaterial code.

new CustomMaterial(test_mat)
{
   mapto = "test_mat";
   texture[0] = "test_mat";
   texture[1] = "$reflectbuff";
   texture[2] = "$backbuff";
   texture[3] = "$fog";
   //texture[4] = "$cubemap";
   shader = Reflect;
   specular = "0.75 0.75 0.75 1.0";
   specularPower = 48.0;
   version = 2.0;   
};

what's wrong?

i need some help.. thanks.