Say I have a Slider called 'DRIVE' and it features values 0-101. 0-100 is the drive and 101 is 'OVERDRIVE' Imagine that the Drive slider has a button called Overdrive at the top of it and when the slider hits 101, I want the Supedrive to light up.
As it is, it seems to only light the subcontrol at 50%. I cannot seem to control this aspect.