Hi,
this is a strange behavior for me. If I increment the array with the keyboard (like in the code) everything works fine,
but if I change the variable (Count) over OSC I get a NullPointerException. (I have checked the incoming OSC message)
Thanks in advance!

This comes up:

processing.app.debug.RunnerException: NullPointerException
    at processing.app.Sketch.placeException(Sketch.java:1543)
    at processing.app.debug.Runner.findException(Runner.java:583)
    at processing.app.debug.Runner.reportException(Runner.java:558)
    at processing.app.debug.Runner.exception(Runner.java:498)
    at processing.app.debug.EventThread.exceptionEvent(EventThread.java:367)
    at processing.app.debug.EventThread.handleEvent(EventThread.java:255)
    at processing.app.debug.EventThread.run(EventThread.java:89)
Exception in thread "Animation Thread" java.lang.NullPointerException
    at processing.core.PVector.add(PVector.java:201)
    at cubixForm_final5.drawVectors(cubixForm_final5.java:172)
    at cubixForm_final5.update(cubixForm_final5.java:99)
    at cubixForm_final5.draw(cubixForm_final5.java:93)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:637)

This is part of my code:

1. int Count =50;
   PVector[] n = new PVector[0];
   
   void setup()
   {
     size(400,400);
   }
   
   
   void draw()
   {
     n = new PVector[Count];
     for (int i=0; i<=Count; i++)
     {
       //drawing
     }
    
   }
   void keyPressed()
   {
   if(key == '+') {Count=Count+100; println(Count);}
   }

this is the part where the array gets out of bounds:

1. for (int i = 0; i < Count; i++) {
     
         PVector x = VecArray[i]; <====== here