CNC Shield + Servomotor using Z+

Hello Community,
I'm trying to connect a servomotor on Z+ pin of CNC Shield but is not working.
I'm very new with arduino/cnc and I don't know what I'm doing wrong. I tried to find the answer on internet but seems that everyone is using GRBL. I will have four stepper motors in my project (X will be duplicated)

This is my code:

#include<Servo.h>

const int StepX = 2;
const int DirX = 5;

const int StepY = 3;
const int DirY = 6;

const int StepZ = 4;
const int DirZ = 7;

const int speed= 1300;

int currentStepX =0;
int currentStepY =0;
int currentStepZ =0;

//servo settings 
Servo myservo;
const byte servoPin = 11; // Z+
byte pos = 0;


void setup() {
  Serial.begin(9600); // for monitor log.
    
  pinMode(StepX,OUTPUT);
  pinMode(DirX,OUTPUT);
  pinMode(StepY,OUTPUT);
  pinMode(DirY,OUTPUT);
 pinMode(StepZ,OUTPUT);
  pinMode( DirZ,OUTPUT);

 myservo.attach(11);


}


void loop() {
 myservo.write(0);
  delay(1000);

   myservo.write(180);
  delay(1000);
}

Thanks in advance,
Adrian

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