Joystick Shield Itead Studio + 2 Servos

JoystickTwoServo.ini

#include <Servo.h> 

Servo Aservo;
Servo Bservo;

const byte PIN_ANALOG_X = 0;
const byte PIN_ANALOG_Y = 1;

const byte PIN_BUTTON_E = 3;
const byte PIN_BUTTON_D = 4;
const byte PIN_BUTTON_SELECT = 5;  // Joy Click
const byte PIN_BUTTON_B = 6;
const byte PIN_BUTTON_A = 7;
const byte PIN_BUTTON_F = 8;
const byte PIN_BUTTON_G = 9;

const byte PIN_SERVO_A = 10;
const byte PIN_SERVO_B = 11;

int sensorX = 0;  // variable to store the value coming from the sensor X
int sensorY = 0;  // variable to store the value coming from the sensor Y
int sensorXant = 0;
int sensorYant = 0;

int aPos = 0;
int bPos = 0;

// variable for reading the pushbutton status
int buttonStateF = 0;  
int buttonStateG = 0; 
int buttonStateJoy = 0;

void setup() {
 Aservo.attach(PIN_SERVO_A);
 Aservo.write(aPos);
 
 Bservo.attach(PIN_SERVO_B);
 Bservo.write(bPos);
 
 // initialize the pushbutton pin as an input: 
 pinMode(PIN_BUTTON_F, INPUT);  
 digitalWrite(PIN_BUTTON_F, HIGH);
 
 pinMode(PIN_BUTTON_G, INPUT);  
 digitalWrite(PIN_BUTTON_G, HIGH);
}

void loop() {
  // read the value from the sensor:
  sensorX = analogRead(PIN_ANALOG_X);    
  sensorY = analogRead(PIN_ANALOG_Y); 
   
  // read the state of the pushbutton value:
  buttonStateF = digitalRead(PIN_BUTTON_F);
  
  if (buttonStateF == LOW) {     
    sensorXant = sensorX;
    aPos = map(sensorXant, 0, 1023, 0, 179);
  } 
  
  buttonStateG = digitalRead(PIN_BUTTON_G);
  
  if (buttonStateG == LOW) {     
    sensorYant = sensorY;
    bPos = map(sensorYant, 0, 1023, 0, 179);
  }
  
  Aservo.write(aPos);
  Bservo.write(bPos);
  delay(90);          
}