/*
   -- AllAround --
   
   This source code of graphical user interface
   has been generated automatically by RemoteXY editor.
   To compile this code using RemoteXY library 3.1.8 or later version
   download by link http://remotexy.com/en/library/
   To connect using RemoteXY mobile app by link http://remotexy.com/en/download/                   
     - for ANDROID 4.11.1 or later version;
     - for iOS 1.9.1 or later version;
   
   This source code is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.   
*/

//////////////////////////////////////////////
//        RemoteXY include library          //
//////////////////////////////////////////////

// RemoteXY select connection mode and include library
#define REMOTEXY_MODE__SOFTSERIAL
#include <SoftwareSerial.h>

#include <RemoteXY.h>

// RemoteXY connection settings
#define REMOTEXY_SERIAL_RX 2
#define REMOTEXY_SERIAL_TX 3
#define REMOTEXY_SERIAL_SPEED 9600

// RemoteXY configurate 
#pragma pack(push, 1)
uint8_t RemoteXY_CONF[] =   // 107 bytes
  { 255,2,0,0,0,100,0,16,223,2,2,1,4,18,22,11,22,25,22,11,
  224,26,31,31,79,78,0,79,70,70,0,129,0,35,5,27,6,18,10,18,
  6,17,65,108,108,32,65,114,111,117,110,100,0,2,1,72,19,22,11,22,
  58,22,11,224,26,31,31,79,78,0,79,70,70,0,129,0,12,14,6,3,
  29,20,8,4,24,76,69,68,0,129,0,78,15,10,3,27,53,13,4,8,
  66,117,122,122,101,114,0 };
 
// this structure defines all the variables and events of your control interface
struct {

    // input variables
  uint8_t LED; // =1 if switch ON and =0 if OFF
  uint8_t Buzzer; // =1 if switch ON and =0 if OFF

    // other variable
  uint8_t connect_flag;  // =1 if wire connected, else =0

} RemoteXY;
#pragma pack(pop)

/////////////////////////////////////////////
//           END RemoteXY include          //
/////////////////////////////////////////////

#define PIN_LED 13
#define PIN_BUZZER 8

void setup()
{
  RemoteXY_Init ();
 
  pinMode (PIN_LED, OUTPUT);
  pinMode (PIN_BUZZER, OUTPUT);
 
  // TODO you setup code
 
}

void loop()
{
  RemoteXY_Handler ();
 
  digitalWrite(PIN_LED, (RemoteXY.LED==0)?LOW:HIGH);
  digitalWrite(PIN_BUZZER, (RemoteXY.Buzzer==0)?LOW:HIGH);
  if(RemoteXY.Buzzer!=0){
    tone(8,400,100);
    tone(8,800,100);
    tone(8,400,100);
  }
if(RemoteXY.LED!=0){
  digitalWrite(PIN_LED,HIGH); // turn the LED on
  delay(1000); // wait a second

  digitalWrite(PIN_LED,LOW); // turn the LED off
  delay(500); // wait a second 
}
 
  // TODO you loop code
  // use the RemoteXY structure for data transfer
  // do not call delay()

}

here is my current code.

/*
   -- AllAround --
   
   This source code of graphical user interface
   has been generated automatically by RemoteXY editor.
   To compile this code using RemoteXY library 3.1.8 or later version
   download by link http://remotexy.com/en/library/
   To connect using RemoteXY mobile app by link http://remotexy.com/en/download/                   
     - for ANDROID 4.11.1 or later version;
     - for iOS 1.9.1 or later version;
   
   This source code is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.   
*/

//////////////////////////////////////////////
//        RemoteXY include library          //
//////////////////////////////////////////////

// RemoteXY select connection mode and include library
#define REMOTEXY_MODE__SOFTSERIAL
#include <SoftwareSerial.h>

#include <RemoteXY.h>

// RemoteXY connection settings
#define REMOTEXY_SERIAL_RX 2
#define REMOTEXY_SERIAL_TX 3
#define REMOTEXY_SERIAL_SPEED 9600

// RemoteXY configurate 
#pragma pack(push, 1)
uint8_t RemoteXY_CONF[] =   // 130 bytes
  { 255,3,0,2,0,123,0,16,223,2,2,1,4,18,22,11,7,25,22,11,
  224,26,31,31,79,78,0,79,70,70,0,129,0,35,5,27,6,18,10,18,
  6,17,65,108,108,32,65,114,111,117,110,100,0,2,1,72,19,22,11,7,
  58,22,11,224,26,31,31,79,78,0,79,70,70,0,69,0,45,32,10,10,
  13,41,10,10,1,4,16,41,21,18,7,45,24,10,45,2,26,129,0,12,
  14,6,3,14,20,8,4,24,76,69,68,0,129,0,78,15,10,3,12,53,
  13,4,8,66,117,122,122,101,114,0 };
 
// this structure defines all the variables and events of your control interface
struct {

    // input variables
  uint8_t LED; // =1 if switch ON and =0 if OFF
  uint8_t Buzzer; // =1 if switch ON and =0 if OFF
  int8_t slider_1; // =0..100 slider position

    // output variables
  int16_t sound_1; // =0 no sound, else ID of sound, =1001 for example, look sound list in app

    // other variable
  uint8_t connect_flag;  // =1 if wire connected, else =0

} RemoteXY;
#pragma pack(pop)

/////////////////////////////////////////////
//           END RemoteXY include          //
/////////////////////////////////////////////

#define PIN_LED 13
#define PIN_BUZZER 8

void setup()
{
  RemoteXY_Init ();
 
  pinMode (PIN_LED, OUTPUT);
  pinMode (PIN_BUZZER, OUTPUT);
 
  // TODO you setup code
 
}

void loop()
{
  RemoteXY_Handler ();
 
  digitalWrite(PIN_LED, (RemoteXY.LED==0)?LOW:HIGH);
  digitalRead(PIN_BUZZER, (RemoteXY.Buzzer==0)?LOW:HIGH);
  if (digitalRead(8) == HIGH) { 
digitalWrite(PIN_BUZZER, HIGH);
  //siren going up
  for (int frequency=650; frequency<900; frequency++) {
    tone(8, frequency);
    delay(10);
  }
  digitalWrite(PIN_BUZZER, LOW);
  // siren going down
  for (int frequency=900; frequency>=650; frequency--) {
    tone(8, frequency);
    delay(10);
  }
}

else {
digitalWrite(PIN_BUZZER,0); //If the switch isn’t pressed, buzzer off.
      }
      delay(10); //reading delay
}
 
  // TODO you loop code
  // use the RemoteXY structure for data transfer
  // do not call delay()