Hello,
Instance the specific rotation controller to the controller which effects the spinner/slider. If you’re using MAXScript to create spinners and sliders UI items, make sure that their given an #angle parameters type rather than #float, otherwise instancing won’t work.
If you have a parameter which has a #float value you can still make this work by doing a two-way wire parameter between rotational track of the toe (assume it’s called RotX) and the spinner/slider (assume it’s called testParam), but by default rotation values are treated as radians and so you have to convert them to degrees and vice versa. So you’re two-way parameter connecting will look like this degToRad(testParam) <—> radToDeg(RotX).
-Harry