This line:
    if(screenImg.pixels[i] != color(255, 0, 0));//if not red

seems not to be working since i always get this in console:
debug: changed 10000 values

I have been trying stuff for at least a hour now but i can't seem to get it fixed.
What is wrong?

1. PImage screenImg;
   
   int[] heightValues;
   
   
   void setup() {
     size(100, 100);
     noLoop();
   
     heightValues = new int[width * height];
   }
   
   
   void draw() {
     background(255, 0, 0);
     fill(0);
     ellipse(50, 50, 50, 50);
   
     addValues(20);
   }
   
   
   void addValues(int theValueToAdd) {
   
     int c = 0;//debug count
    
     loadPixels();
     screenImg = get(0, 0, width, height);
     screenImg.loadPixels();
     println(screenImg.pixels[5000]);
     println(color(255, 0, 0));
    
     for(int i = 0; i < screenImg.pixels.length; i++) {
       if(screenImg.pixels[i] != color(255, 0, 0));//if not red
       heightValues[i] = theValueToAdd;
       c++;
     }
   
     println("debug: changed "+ c +" values");
   }