int sensorValue=0;
int Vera=A0; // value for A0
int Razel=13; // value for 13

void setup() {
  pinMode(Vera, INPUT);
  pinMode(Razel, OUTPUT);
}

void loop() {
  sensorValue=analogRead(Vera); // turn on the LED
  digitalWrite(Razel, HIGH); // pause the program
  delay(sensorValue); // wait
  digitalWrite(Razel, LOW); //turn off the LED
  delay(sensorValue); // wait 
}