void loop() 
{ 
  RemoteXY_Handler ();
  
  
  // TODO you loop code
  // use the RemoteXY structure for data transfer
  // do not call delay(), use instead RemoteXY_delay() 


}

]

This is my code:
/*
   -- Water --
   
   This source code of graphical user interface
   has been generated automatically by RemoteXY editor.
   To compile this code using RemoteXY library 3.1.13 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 4.14.08 or later version;
     - for iOS 1.11.2 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          //
//////////////////////////////////////////////

// you can enable debug logging to Serial at 115200
//#define REMOTEXY__DEBUGLOG   

// RemoteXY select connection mode and include library
#define REMOTEXY_MODE__SOFTSERIAL

#include <SoftwareSerial.h>

// RemoteXY connection settings
#define REMOTEXY_SERIAL_RX 10
#define REMOTEXY_SERIAL_TX 11
#define REMOTEXY_SERIAL_SPEED 9600

#include <RemoteXY.h>

// RemoteXY GUI configuration 
#pragma pack(push, 1) 
uint8_t RemoteXY_CONF[] =   // 107 bytes
  { 255,0,0,13,0,100,0,18,0,0,0,31,1,106,200,1,1,4,0,72,
  6,17,41,41,4,166,140,208,26,0,0,0,0,0,0,122,69,0,0,0,
  0,72,58,18,40,40,4,166,140,37,26,0,0,0,0,0,0,200,66,0,
  0,0,0,72,5,75,40,40,4,166,140,137,26,0,0,0,0,0,0,96,
  65,0,0,0,0,72,58,75,39,39,12,166,140,94,26,0,0,0,0,0,
  0,122,67,0,0,0,0 };
 
// this structure defines all the variables and events of your control interface
struct {

    // output variables
  float tdsValue; // from 0 to 4000
  float temperature; // from 0 to 100
  float phValue; // from 0 to 14
  int8_t turbidity; // from 0 to 250

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

} RemoteXY;   
#pragma pack(pop)

/////////////////////////////////////////////
//           END RemoteXY include          //
/////////////////////////////////////////////
// Include additional libraries
#include <EEPROM.h>
#include "GravityTDS.h"
#include "max6675.h"

// Pin definitions
#define TdsSensorPin A1
#define thermoDO 4
#define thermoCS 5
#define thermoCLK 6
#define sensorpin A2
#define pHSense A0

// Sensor instances
GravityTDS gravityTds;
MAX6675 thermocouple(thermoCLK, thermoCS, thermoDO);

// Global variables
float temperature = 25, tdsValue = 0;
int samples = 10;
float adc_resolution = 1024.0;

void setup()
{

  Serial.begin(9600);
  RemoteXY_Init ();

  // Initialize TDS sensor
  gravityTds.setPin(TdsSensorPin);
  gravityTds.setAref(3.3);
  gravityTds.setAdcRange(1024.0);
  gravityTds.begin();
 
  Serial.println("MAX6675 & pH Sensor Initialization");
 
  // Delay for MAX6675 to stabilize
  delay(500);
 
 
  // TODO you setup code
 
}

float ph(float voltage) {
  return 7 + ((2.65 - voltage) / 0.18);
}

void loop()
{
  RemoteXY_Handler ();
  // Read temperature from thermocouple
  float tempC = thermocouple.readCelsius();
  RemoteXY.temperature = tempC;
 
  // Update TDS sensor temperature and value
  gravityTds.setTemperature(tempC);
  gravityTds.update();
  tdsValue = gravityTds.getTdsValue();
  RemoteXY.tdsValue = tdsValue;
 
  // Read turbidity sensor
  int sensorValue = analogRead(sensorpin);
  int turbidity = map(sensorValue, 0, 750, 100, 0);
  RemoteXY.turbidity = turbidity;

  // Read pH sensor
  int measurings = 0;
  for (int i = 0; i < samples; i++) {
    measurings += analogRead(pHSense);
    delay(10);
  }
   float voltage = 5.0 / adc_resolution * measurings / samples;
  float pHValue = ph(voltage);
  RemoteXY.phValue = pHValue;

  // Debug prints (optional)
  Serial.print("TDS: ");
  Serial.print(tdsValue);
  Serial.println(" ppm");
 
  Serial.print("Temp: ");
  Serial.print(tempC);
  Serial.println(" C");
 
  Serial.print("Turbidity: ");
  Serial.println(turbidity);
 
  Serial.print("pH: ");
  Serial.println(pHValue);
 
  delay(1000);
   

}