unwrap load

The problem is here that when i run this, i get a pop up which asks me what .uvw file to load, but I want that in the code so that I only have to select the objects, press a button, and the script applies the appropiate .uvw file on them. Can anyone help me with this?

$.modifiers[#unwrap_uvw].unwrap.load ()
$.modifiers[#unwrap_uvw].unwrap.load () "c:\1.uvw"