Using a Potentiometer and AnalogWrite to Control 3 LEDs

/*
 *  Jung Min Yean
 *  04/01/19
 *  Learning How to Use Analog Read and Write
 */

 const int LedPin1 = 9;
 const int LedPin2 = 10;
 const int LedPin3 = 11;
 const int PotPin = A0;
 int PotVal = 0;

void setup()
{
 pinMode(LedPin1, OUTPUT);
 pinMode(LedPin2, OUTPUT);
 pinMode(LedPin3, OUTPUT);
 pinMode(PotPin, INPUT);
 Serial.begin(9600);
}

void loop()
{
  // test potentiometer
  PotVal = analogRead(PotPin);
  Serial.print(PotVal);
  Serial.print("      ");
  int MapValue = map(PotVal,0,1023,255,0);
  Serial.println(MapValue);
  analogWrite(LedPin1, PotVal);
  analogWrite(LedPin2, PotVal);
  analogWrite(LedPin3, PotVal);
}