How to make 3 speed motor control using arduino?

admin says:

Refer : Servo control by push button switch arduino

/* Set a speed value between 0 to 255 for each variable
speed_value1,speed_value2,speed_value3*/
if (digitalRead(2) == HIGH) {
  // Pin - o/p to the motor from any of the PWM pin.
  analogWrite(Pin, speed_value1);
}
if (digitalRead(3) == HIGH) {
  analogWrite(Pin, speed_value2);
}
if (digitalRead(4) == HIGH) {
  analogWrite(Pin, speed_value3);
}