Is there any way to be automatic only for white and black via jsx?

var desc1 = new ActionDescriptor();
desc1.putBoolean(charIDToTypeID("AuTn"), true); // AuTn = Auto
executeAction(stringIDToTypeID('Adobe Camera Raw Filter'), desc1, DialogModes.NO);

In this script, "AuTn" is every parameter in automatic light and shadow of Camera Raw. I only need automatic white and black, because I don't want automatic exposure, and exposure will affect the results of automatic white and black.
So, is there any way to be automatic only for white and black?