Where is my mistake? Arduino+ Blynk app

This code

// Include the AccelStepper Library
#include <AccelStepper.h>

// Creates an instance
// Pins entered in sequence IN1-IN3-IN2-IN4 for proper step sequence
AccelStepper myStepper(AccelStepper::FULL4WIRE, 4, 6, 5, 7);
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial

#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "xxxxxxxxxx";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "xxxxx";
char pass[] = "xxxxxxxxx";

// Hardware Serial on Mega, Leonardo, Micro...
#define EspSerial Serial1

// or Software Serial on Uno, Nano...
//#include <SoftwareSerial.h>
//SoftwareSerial EspSerial(2, 3); // RX, TX

// Your ESP8266 baud rate:
#define ESP8266_BAUD 9600

ESP8266 wifi(&EspSerial);

void setup()


  Blynk.begin(auth, wifi, ssid, pass);
BLYNK_WRITE(V0)   // Slider in V0
 int cup_slider = param.asInt();
  // set the maximum speed, acceleration factor,
  // initial speed and the target position
 if (cup_slider = param.asInt()== 1)
  myStepper.moveTo((cup_slider) * 2048ul);
  // aqui serve para setar o numero de voltas que o motor 
  // vai dar, então no caso é melhor que marcar o tempo 
  // em minutos 1 volta=2038


void loop(){
  // Move the motor one step each time through loop()

make me an error
C: \ Users \ gabri \ OneDrive \ test_motorzin \ mano_for_testing_motor \ motor_of_variables_voltas.ino: In function ‘void BlynkWidgetWrite0 (BlynkReq &, const BlynkParam &)’:
motor_da_varias_voltas: 64: 12: error: a function-definition is not allowed here before ‘{’ token
void loop () {
motor_da_varias_voltas: 70: 1: error: expected ‘}’ at end of input
Multiple libraries were found for “BlynkSimpleShieldEsp8266.h”
Used: C: \ Users \ gabri \ OneDrive \ Documents \ Arduino \ libraries \ Blynk
Not used: C: \ Users \ gabri \ OneDrive \ Documents \ Arduino \ libraries \ blynk-library-master
exit status 1
a function-definition is not allowed here before ‘{’ token

but I don’t know exactly where I’m wrong, another thing I’d like to ask is if anyone knows how I can use the value that comes out of BLYNK_WRITE (V0) (which is a slider in the blynk app) to pass to cup_slider and thus be able to multiply by 2048 down there
thank you very much for your attention, and forgive the “silly” doubts

5 posts were merged into an existing topic: How to reset the position?