Controlling 2 LEDs using Max and Arduino

Medd I'm trying to use your arduino code but it is giving me an error message saying there is an extra \ in the code and highlighting this part:

if (Serial.read() == ‘\n’)

What do I need to do to get that fixed?

Edit:
So I got the code to upload into the arduino, but I can't get the max patcher to communicate to the arduino.

On another note I got The code below to work but I need to control the brightness of the leds, not just turn them on and off.

/*
Serial RGB LED controller
by Tom Igoe
adaboed by Scott Fitzgerald
Controls three LEDs whose legs are
connected to pins 9, 10, and 11.
*/
// constants to hold the output pin numbers:
const int LEDone = 9;
const int LEDtwo = 10;
const int LEDthree = 11;
int currentPin = 0; // current pin to be faded
int brightness = 0; // current brightness level
void setup() {
// initiate serial communication:
Serial.begin(9600);
// initialize the LED pins as outputs:
pinMode(LEDone, OUTPUT);
pinMode(LEDtwo, OUTPUT);
pinMode(LEDthree, OUTPUT);
}
void loop() {
// if there’s any serial data in the buffer, read a byte:
if (Serial.available() > 0) {
int inByte = Serial.read();
Serial.write(inByte);
// respond to the values ‘a’, ‘b’, ‘c’, or ’0′ through ’9′.
// you don’t care about any other value:
if (inByte == ‘a’) {
currentPin = LEDone;
}
if (inByte == ‘b’) {
currentPin = LEDtwo;
}
if (inByte == ‘c’) {
currentPin = LEDthree;
}
if (inByte >= ’0′ && inByte < = '9') {
// map the incoming byte value to the range of the analogWrite() command
brightness = map(inByte, ’0′, ’9′, 0, 255);
// set the current pin to the current brightness:
analogWrite(currentPin, brightness);
}
}
}