You don’t need to hack the script, just append ‘_AS01’ to the object name, it’s commented on in the LF_README.txt
There is a something in the script I have forgotten, ‘_AS00’ should be valid as well, but is ignored, but is easily changed.
For the time being, ‘_AS01’ will work just as well, it would be the same as when using Blender’s autosmooth with a value of 1.