Test Custom Indicator using iCustom() in Strategy Tester via EA

I would like to test the Custom indicator using Strategy Tester. Hence I create a simple EA to call the Custom Indicator using iCustom()

Problem: Custom indicator global variable seem do not record the previous assigned value when testing in Strategy Tester but this is not the case when manually attach to chart window.

EA Code:

#property link      ""
double ind1[6], ind2[6], ind3[6];
//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| expert start function                                            |
//+------------------------------------------------------------------+
int start()
  {
//----
   GetSubIndicatorValue();
//----
   return(0);
  }
//+------------------------------------------------------------------+

//Fetch all subindicator value into the system
void GetSubIndicatorValue()
{
   //string indicator1 = "TradingRange";
   string indicator2 = "FlagV2";
   //string indicator3 = "Pennant";
   
   
   //get value from indicator1
   //total : 5
   //ind1[0]= iCustom(NULL,0,indicator1,0,0);
   //ind1[1]= iCustom(NULL,0,indicator1,1,0);
   //ind1[2]= iCustom(NULL,0,indicator1,2,0);
   //ind1[3]= iCustom(NULL,0,indicator1,3,0);
   //ind1[4]= iCustom(NULL,0,indicator1,4,0);
   
   //get value from indicator2
   //total : 5
   
   ind2[0]= iCustom(NULL,0,indicator2,0,true,0);
   ind2[1]= iCustom(NULL,0,indicator2,1,true,0);
   ind2[2]= iCustom(NULL,0,indicator2,2,true,0);
   ind2[3]= iCustom(NULL,0,indicator2,3,true,0);
   ind2[4]= iCustom(NULL,0,indicator2,4,true,0);
   
   //get value from indicator3
   //total : 4
   /*
   ind3[0]= iCustom(NULL,0,indicator3,0,true, 0);
   ind3[1]= iCustom(NULL,0,indicator3,1,true, 0);
   ind3[2]= iCustom(NULL,0,indicator3,2,true, 0);
   ind3[3]= iCustom(NULL,0,indicator3,3,true, 0);
   */
}

The on test Custom Indicator Code:

#property link      ""

#property indicator_chart_window

#property indicator_buffers 6 
//create an indicator to store the data used for public, retrieve them from top.
//store at bottom
//convert store value to int, string or double.
#property indicator_color1 Tomato      
#property indicator_color2 Tomato      
#property indicator_color3 Tomato      
#property indicator_color4 Tomato      
#property indicator_color5 Tomato      
#property indicator_color6 Tomato  
// ----- indicator_buffers
//share buffer
double   IndicatorBuffer1[5000];
double   IndicatorBuffer2[];
double   IndicatorBuffer3[];
double   IndicatorBuffer4[];
double   IndicatorBuffer5[];
double   IndicatorBuffer6[];

bool BreakOutCheckingNeeded;

//AveragedMedian = AccumulatedMedian/MedianPeriod
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
  Comment("init() Entered");

     //RangeEffect
   SetIndexStyle(0,DRAW_ARROW);     
   SetIndexBuffer(0,IndicatorBuffer1); 
   
   SetIndexStyle(1,DRAW_NONE);          
   SetIndexBuffer(1,IndicatorBuffer2); 
   
   SetIndexStyle(2,DRAW_NONE);          
   SetIndexBuffer(2,IndicatorBuffer3);
   
   SetIndexStyle(3,DRAW_NONE);          
   SetIndexBuffer(3,IndicatorBuffer4);
   
   SetIndexStyle(4,DRAW_NONE);          
   SetIndexBuffer(4,IndicatorBuffer5);
   
   SetIndexStyle(5,DRAW_NONE);          
   SetIndexBuffer(5,IndicatorBuffer6);
     //clear buffer value 
   SetIndexEmptyValue(0,0.0); 
   SetIndexEmptyValue(1,0.0);
   SetIndexEmptyValue(2,0.0); 
   SetIndexEmptyValue(3,0.0);
   SetIndexEmptyValue(4,0.0); 
   SetIndexEmptyValue(5,0.0);

   BreakOutCheckingNeeded = false;

   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   DeleteObjectStartWithName(ObjName);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
  
  DebugMsg2 = BreakOutCheckingNeeded;
  BreakOutCheckingNeeded = true;

   GUIPainter_Label(ObjName+"labeldebug2",DebugMsg2,Red,0,5,25);

   return(0);
  }
//+------------------------------------------------------------------+


//Create a label
void GUIPainter_Label(string labelName, string msg,color clr,int refCorner, int xpos,int ypos)//---------------- 1 --
{
---
}

-----------

test result

-----------

Custom Indicator shot from Strategy Tester

Custom indicator label showing "0" on Strategy Tester Chart window (when testing on progress).

Custom Indicator shot from Strategy Tester 2

Custom indicator label showing "1" on Strategy Tester Chart window (when Stop pressed).

Manual attach Custom Indicator to Chart Window

Custom Indicator showing "1" on live Chart window when custom indicator manually attached.

Suspect for problem:

1. what happen when EA called iCustom each time?
when tick arrive, iCustom() trigger, is the sequence of indicator evaluation start from Init()->Start() always?
or control go directly to Start() and the Init() only trigger once when the strategy tester started?

2. Is this problem caused only to UI Invalidate problem but the global variable value still take effect during run time on Strategy tester?

It seem like UI do not show correct result "1" but showing "0" instread during run time, but it shows the correct result "1" when Stop pressed.

Any one know why this happen?

Thanks for taking time to understand the problem. Please let me know if you need any further clarification.

Thanks.