Kinect issue!

Hi!

Trying to run a Processing and Kinect version 1 interactive sketch. Running into errors. One error: cannot find anything named "num". This is in reference to my Processing sketch. Please help! Thank you!

import org.openkinect.freenect.*;
import org.openkinect.processing.*;

Kinect kinect;

// Depth image
PImage depthImg;

// Which pixels do we care about?
// These thresholds can also be found with a variaty of methods
float minDepth =  996;
float maxDepth = 2493;

// What is the kinect's angle
float angle;

void setup() {
  size(640, 480);
  colorMode(HSB, 255, 50, 50);
  frameRate(2.5);

  for (int i=0; i<num; i++) {
    col[i]= (int) random(255);
  }

  kinect = new Kinect(this);
  kinect.initDepth();
  angle = kinect.getTilt();

  // Blank image
  depthImg = new PImage(kinect.width, kinect.height);
}

void draw() {
  background(#FFFFFF);

  for (int i=0; i<num; i++) {
    float x = width/2 + random(-vari, vari);
    float y = height/2 + random(-vari, vari);
    stroke(col[i], 100, 100, 50);
    strokeWeight(width/5);
    noFill();
    sz = width/5;
    ellipse(x, y, sz, sz);
  }
  image(kinect.getDepthImage(), 0, 0);

  // Calibration
   //minDepth = map(mouseX,0,width, 0, 4500);
  //maxDepth = map(mouseY,0,height, 0, 4500);

  // Threshold the depth image
  int[] rawDepth = kinect.getRawDepth();
  for (int i=0; i < rawDepth.length; i++) {
    if (rawDepth[i] >= minDepth && rawDepth[i] <= maxDepth) {
      depthImg.pixels[i] = color(255);
    } else {
      depthImg.pixels[i] = color(0);
    }
  }

  // Draw the thresholded image
  depthImg.updatePixels();
  image(depthImg, kinect.width, 0);

  //Comment for Calibration
  fill(0);
  text("TILT: " + angle, 10, 20);
  text("THRESHOLD: [" + minDepth + ", " + maxDepth + "]", 10, 36);

  //Calibration Text
  //fill(255);
  //textSize(32);
  //text(minDepth + " " + maxDepth, 10, 64);
}

// Adjust the angle and the depth threshold min and max
void keyPressed() {
  if (key == CODED) {
    if (keyCode == UP) {
      angle++;
    } else if (keyCode == DOWN) {
      angle--;
    }
    angle = constrain(angle, 0, 30);
    kinect.setTilt(angle);
  } else if (key == 'a') {
    minDepth = constrain(minDepth+10, 0, maxDepth);
  } else if (key == 's') {
    minDepth = constrain(minDepth-10, 0, maxDepth);
  } else if (key == 'z') {
    maxDepth = constrain(maxDepth+10, minDepth, 2047);
  } else if (key =='x') {
    maxDepth = constrain(maxDepth-10, minDepth, 2047);
  }
}