How to move micro servo using blynk

#define BLYNK_PRINT Serial 

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

char auth [] = "***********"; 
char ssid [] = "*******"; 
char pass [] = "*****"; 

Servo gerak_servo; 

BLYNK_WRITE (V1) { 
gerak_servo.write (param.asInt ()); 
} 

void setup () { 
Serial.begin (9600); 

gerak_servo.attach (2); 

Blynk.begin (auth, ssid, pass); 
} 
void loop () { 
Blynk.run (); 
}