Finding the HSL Threshold for my reflective tape

[Gmercer]

Im currently progrmming an AxisCamera to pick up reflective tape and crop rectangle around the tape. i have most of the code down except for the parameters of the HSL Threshold, here is what i have:

public void cameraCapture() throws AxisCameraException, NIVisionException {
        if (joy1.getRawButton(3)) {
            ColorImage initImg;
            BinaryImage dataImg;
            ParticleAnalysisReport[] particle;
            int trgCnt;
            SmartDashboard.putString("Taken Picture", "Picture begun...");
            if(camera.freshImage()) {
                initImg = camera.getImage();

                //RIGHT HERE
                dataImg = initImg.thresholdHSL(0, 0, 0, 0, 0, 0);   //set threshold to bright colors(UNFINISHED)
                //No clue how to find these parameters

                dataImg = dataImg.removeSmallObjects(false, 1);     //remove small pixles from image
                dataImg = dataImg.convexHull(false);                //fill in rectangles selected
                dataImg = dataImg.particleFilter(critCollection);   //filter rectangles
                trgCnt = dataImg.getNumberParticles();
                if(trgCnt > 0) {
                    particle = dataImg.getOrderedParticleAnalysisReports();
                    SmartDashboard.putString("Taken Picture", "binary mapping finished....calling Aim");
                    Aim(particle);
                } else {
                    SmartDashboard.putString("Taken Picture", "No particles to manipulate, picture was not taken?");
                }
                dataImg.free();
                initImg.free(); 
            }
        }
    }

i don't know how to find the values. The function requires:

int hueLow
int hueHigh
int saturationLow
int saturationHigh
int luminenceLow
int luminenceHigh

I was told the NI tool "Particle Classification Training" would help, but i am not sure how to go about finding these limits of an image, how can i attain these values? Example image that i would use(im looking for the green boarder):