2. import controlP5.*;
3. 
   
4. ControlP5 controlP5;
5. 
   
6. int slider_hours;
7. 
   
8. float hours[] = {
9.   0.0, 0.383333, 0.766667, 1.15, 1.533333, 1.916667, 2.3, 2.683333, 3.066667, 3.45, 3.833333, 4.216667, 4.6, 4.983333, 5.366667, 5.75, 6.133333, 6.516667, 6.9, 7.283333, 7.666667, 8.05, 8.433333, 8.816667, 9.2, 9.583333, 9.966667, 10.35, 10.733333, 11.116667, 11.5, 11.883333, 12.266667, 12.65, 13.033333, 13.416667, 13.8, 14.183333, 14.566667, 14.95, 15.333333, 15.716667, 16.1, 16.483333, 16.866667, 17.25, 17.633333, 18.016667, 18.4, 18.783333, 19.166667, 19.55, 19.933333, 20.316667, 20.7, 21.083333, 21.466667, 21.85, 22.233333, 22.616667, 23.0
10. };
11. 
    
12. void setup()
13. {
14.   size(640, 480);
15.   int i;
16.   controlP5 = new ControlP5(this);
17. 
    
18.   i = 0;
19. 
    
20.   controlP5.addSlider("slider_hours")
21.     .setPosition(10, 25 + 15*i++)
22.       .setSize(200, 10)
23.         .setRange(0, hours.length-1)
24.           .setValue(hours.length/2)
25.             .setLabel("Hour")
26.               .setSliderMode(Slider.FLEXIBLE)
27.                 .setNumberOfTickMarks(hours.length)
28.                   .showTickMarks(false)
29.                     ;
30. 
    
31.   controlP5.addSlider("slider_global")
32.     .setPosition(10, 25 + 15*i++)
33.       .setSize(200, 10)
34.         .setRange(0, hours.length-1)
35.           .setValue(hours.length/2)
36.             .setLabel("Global")
37.               .setSliderMode(Slider.FLEXIBLE)
38.                 ;
39. }
40. 
    
41. void draw()
42. {
43. }
44. 
    
45. void slider_hours(int value)
46. {
47.   slider_hours = value;
48. 
    
49.   println("h: " + value);
50. 
    
51.   if ( controlP5.getController("slider_hours").isMousePressed() )
52.     controlP5.getController("slider_global").setValue(slider_hours);
53. }
54. 
    
55. void slider_global(int value)
56. {
57.   int temp;
58.   if ( controlP5.getController("slider_global").isMousePressed() )
59.   {    
60.     println("Hour value to set: "+value + " " + hours.length + " " + (value%hours.length));
61.     temp = int(value%hours.length);
62.     println("setValue function " + temp);
63.     controlP5.getController("slider_hours").setValue(temp);
64.     println("custom function " + temp);
65.     slider_hours( temp );
66.     println("Hour value set: "+controlP5.getController("slider_hours").value());
67.   }
68. }

When I drag the hours slider, the changes reflect to the global slider with no problems. But when I drag the global slider it becomes some what out of sync... I included println for debug, to show that when updating the hours slider I pass the correct value, but for some reason it uses other value instead...