Blynk fade example

good morning friends … i would like to use this code in a project and i would like to know if you can add a blynk button to the fade example
and would you like to put on a top to stay lit?
for example: a physical push button is triggered and the lamp turns on for 1 minute then turns off
I tried to add a button in this code, but without success, the lamp is always on :frowning:


/*************************************************************
  Download latest Blynk library here:
    https://github.com/blynkkk/blynk-library/releases/latest

  Blynk is a platform with iOS and Android apps to control
  Arduino, Raspberry Pi and the likes over the Internet.
  You can easily build graphic interfaces for all your
  projects by simply dragging and dropping widgets.

    Downloads, docs, tutorials: http://www.blynk.cc
    Sketch generator:           http://examples.blynk.cc
    Blynk community:            http://community.blynk.cc
    Follow us:                  http://www.fb.com/blynkapp
                                http://twitter.com/blynk_app

  Blynk library is licensed under MIT license
  This example code is in public domain.

 *************************************************************

  Fade using a LED widget on your phone!

  App project setup:
    LED widget on V2
 *************************************************************/

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

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

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

WidgetLED led2(V2);

BlynkTimer timer;

// V2 LED Widget is fading
void fadeLedWidget()
{
  static int value = 0;
  static int delta = 30;
  value += delta;
  if (value > 255 || value < 0) {
    delta = -delta;
  } else {
    Serial.print("LED on V2: ");
    Serial.println(value);
    led2.setValue(value);
  }
}

void setup()
{
  // Debug console
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);

  timer.setInterval(300L, fadeLedWidget);
}

void loop()
{
  Blynk.run();
  timer.run();
}