How to transfer some output to properties

I was find a java coding and I want to use the output value for properties transfer, however I don't know how to do. Can you teach me? Thanks

import java.util.Random;

/** Generate random integers in a certain range. */
public final class RandomRange {
 
  public static final void main(String[] args){
    log("Generating random integers in the range 1..10.");
 
    int START = 100;
    int END = 256;
    Random random = new Random();
    for (int idx = 1; idx <= 10; ++idx){
      showRandomInteger(START, END, random);
    }
   
    log("Done.");
  }
 
  private static void showRandomInteger(int aStart, int aEnd, Random aRandom){
    if ( aStart > aEnd ) {
      throw new IllegalArgumentException("Start cannot exceed End.");
    }
    //get the range, casting to long to avoid overflow problems
    long range = (long)aEnd - (long)aStart + 1;
    // compute a fraction of the range, 0 <= frac < range
    long fraction = (long)(range * aRandom.nextDouble());
    int randomNumber =  (int)(fraction + aStart);   
    log("Generated : " + randomNumber);

  }
 
  private static void log(String aMessage){
    System.out.println(aMessage);

  }
}


--------------------------------------------------

I was using following coding, but it not work.

def props = testRunner.testCase.getTestStepByName("Properties");
props.setPropertyValue("randomValue", randomNumber)