It works for Knobs:
const var Knob1 = Content.getComponent("Knob1");
Knob1.setRange(-12, 1, 0.1);
Knob1.set("saveInPreset", false);
Knob1.setValue(-2.0);
Console.print("Range: " + Knob1.getValue()); // -2
Console.print("Normalized: " + Knob1.getValueNormalized()); // 0.33
Haven't checked the other controls :)