Computer and Phone Communication

#include <SoftwareSerial.h>

SoftwareSerial BTSerial(12,13);
int led = 8;
char command;

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

void loop(){
  if(BTSerial.available()){
  char command = BTSerial.read();
  Serial.println(char(command));
  if (command == 'Y' || command == 'y'){
    digitalWrite(led, HIGH);
  }
  else if(command == 'N' || command == 'n'){
    digitalWrite(led, LOW);
  }
}
}