impossibile open file and error in ExtExpert "undelcared Identifier"

[ginevra2016]

Hi, I recently approached at mql5 languages amd this is my first EA;

my purpose was create an EA with the wizard increase my custom filters by followings the tutorial of the following link step by step :

https://www.mql5.com/en/articles/488

But once finisced it tells me that it is impossible to open file

"#include <Expert\Signal\SignalCCIxx.mqh>"

and gives me error :

" ExtExpert undelcared Identifier " 

could you tell me when is the error ?

thanks in advance;

this is the code:

( the code is not finished , but it is inutil continue if the system continue give error to me )

//+------------------------------------------------------------------+
//|                                                     MASystem.mq5 |
//|                        Copyright 2021, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2021, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
//+------------------------------------------------------------------+
//| Include                                                          |
//+------------------------------------------------------------------+
#include <Expert\Expert.mqh>
//--- available signals
#include <Expert\Signal\SignalMA.mqh>
//--- available trailing
#include <Expert\Trailing\TrailingNone.mqh>
//--- available money management
#include <Expert\Money\MoneyFixedLot.mqh> 
#include <Expert\SignalCCIxx.mqH>

//+------------------------------------------------------------------+
//| Inputs                                                           |
//+------------------------------------------------------------------+
//--- inputs for expert
input string             Expert_Title         ="MASystem";  // Document name
ulong                    Expert_MagicNumber   =10727;       //
bool                     Expert_EveryTick     =false;       //
//--- inputs for main signal
input int                Signal_ThresholdOpen =10;          // Signal threshold value to open [0...100]
input int                Signal_ThresholdClose=10;          // Signal threshold value to close [0...100]
input double             Signal_PriceLevel    =0.0;         // Price level to execute a deal
input double             Signal_StopLevel     =50.0;        // Stop Loss level (in points)
input double             Signal_TakeLevel     =50.0;        // Take Profit level (in points)
input int                Signal_Expiration    =4;           // Expiration of pending orders (in bars)
input int                Signal_MA_PeriodMA   =12;          // Moving Average(12,0,...) Period of averaging
input int                Signal_MA_Shift      =0;           // Moving Average(12,0,...) Time shift
input ENUM_MA_METHOD     Signal_MA_Method     =MODE_SMA;    // Moving Average(12,0,...) Method of averaging
input ENUM_APPLIED_PRICE Signal_MA_Applied    =PRICE_CLOSE; // Moving Average(12,0,...) Prices series
input double             Signal_MA_Weight     =1.0;         // Moving Average(12,0,...) Weight [0...1.0]
//--- inputs for money
input double             Money_FixLot_Percent =10.0;        // Percent
input double             Money_FixLot_Lots    =0.1;         // Fixed volume
input int                Signal_CCIxx_PeriodXXI = 8;
input ENUM_APPLIED_PRICE Signal_CCIxx_Applied = PRICE_CLOSE ;
input double             Signal_CCIxx_Weight = 0.8;
 

CExpert ExtExpert;


class CSignalCCI : public CExpertSignal 
{
protected :
     CiCCI m_CCIxx ; 
     int m_periodCCI;
     ENUM_APPLIED_PRICE m_applied ;
     int m_pattern_0;// the oscillator has required direction 
     int m_pattern_1;// reverse behind the level of overbuying / overselling 
     int m_pattern_2;// divergence of the oscillator and price 
     int m_pattern_3;// double divergence of the oscillator price 
     //variabiliù
     double m_extr_osc[10]; // array of values of extremums of the oscillator 
     double m_extr_pr [10];// values of the corresponding extremums of price 
     int m_extr_pos [10]; // array of shifts of extremums (in bars) 
     uint m_extr_map ; // resulting bit-map of ratio nof extremums of the oscillatroer price  
     //variabili personalizzate 
     int m_pattern_4;//il nostro nprimo nuoivo pattern : i valori attraversano lo zero" 
     int m_pattern_5 ; // secondo nuovo modello : i valori rimbalzano intorno allo zero "
 }
 void CSignalCCIxx:: CSignalCCIxx () 
{
m_used_series= USE_SERIES_HIGH +USE_SERIES_LOW ;
m_periodCCIxx= 14;
m_pattern_0= 90;
m_pattern_1 = 60;
m_pattern_2 = 100
m_pattern_3 =50
m_pattern_4= 90;
m_Pattern_5= 90;
}
//+------------------------------------------------------------------+
//| Initialization function of the expert                            |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- Initializing expert
   if(!ExtExpert.Init(Symbol(),Period(),Expert_EveryTick,Expert_MagicNumber) ) 
     {
      //--- failed
      printf(__FUNCTION__+": error initializing expert") ; 
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- Creating signal
   CExpertSignal *signal=new CExpertSignal;
   if(signal==NULL)
     {
      //--- failed
      printf(__FUNCTION__+": error creating signal");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//---
   ExtExpert.InitSignal(signal);
   signal.ThresholdOpen(Signal_ThresholdOpen);
   signal.ThresholdClose(Signal_ThresholdClose);
   signal.PriceLevel(Signal_PriceLevel);
   signal.StopLevel(Signal_StopLevel);
   signal.TakeLevel(Signal_TakeLevel);
   signal.Expiration(Signal_Expiration);
//--- Creating filter CSignalMA
   CSignalMA *filter0=new CSignalMA;
   if(filter0==NULL)
     {
      //--- failed
      printf(__FUNCTION__+": error creating filter0");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
   signal.AddFilter(filter0);
//--- Set filter parameters
   filter0.PeriodMA(Signal_MA_PeriodMA);
   filter0.Shift(Signal_MA_Shift);
   filter0.Method(Signal_MA_Method);
   filter0.Applied(Signal_MA_Applied);
   filter0.Weight(Signal_MA_Weight);
//--- Creation of trailing object
   CTrailingNone *trailing=new CTrailingNone;
   if(trailing==NULL)
     {
      //--- failed
      printf(__FUNCTION__+": error creating trailing");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- Add trailing to expert (will be deleted automatically))
   if(!ExtExpert.InitTrailing(trailing))
     {
      //--- failed
      printf(__FUNCTION__+": error initializing trailing");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- Set trailing parameters
//--- Creation of money object
   CMoneyFixedLot *money=new CMoneyFixedLot;
   if(money==NULL)
     {
      //--- failed
      printf(__FUNCTION__+": error creating money");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- Add money to expert (will be deleted automatically))
   if(!ExtExpert.InitMoney(money))
     {
      //--- failed
      printf(__FUNCTION__+": error initializing money");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- Set money parameters
   money.Percent(Money_FixLot_Percent);
   money.Lots(Money_FixLot_Lots);
//--- Check all trading objects parameters
   if(!ExtExpert.ValidationSettings())
     {
      //--- failed
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- Tuning of all necessary indicators
   if(!ExtExpert.InitIndicators())
     {
      //--- failed
      printf(__FUNCTION__+": error initializing indicators");
      ExtExpert.Deinit();
      return(INIT_FAILED);
     }
//--- ok
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Deinitialization function of the expert                          |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   ExtExpert.Deinit();
  }
//+------------------------------------------------------------------+
//| "Tick" event handler function                                    |
//+------------------------------------------------------------------+
void OnTick()
  {
   ExtExpert.OnTick();
  }
//+------------------------------------------------------------------+
//| "Trade" event handler function                                   |
//+------------------------------------------------------------------+
void OnTrade()
  {
   ExtExpert.OnTrade();
  }
//+------------------------------------------------------------------+
//| "Timer" event handler function                                   |
//+------------------------------------------------------------------+
void OnTimer()
  {
   ExtExpert.OnTimer();
  }
//+------------------------------------------------------------------+

[William Roeder]

ginevra2016: But once finisced it tells me that it is impossible to open file

"#include <Expert\Signal\SignalCCIxx.mqh>"

The SignalCCIxx.mqh file should be placed in the \MQL5\Include\Expert\Signal\
          Exploring Trading Strategy Classes of the Standard Library - Customizing Strategies - MQL5 Articles

Did you create it and put it in the proper folder?