How can we calculate highest and lowest candle close between specifed EA working hours

Hi dear friends and admins,

One of my expert advisor is running only between 09.30-18.10 hours.

I want to find, in 1 minute chart, highest and lowest candle close between that hours, anyone can help me?

Here is some code:

#include <Trade\PositionInfo.mqh>
...

input int      robotCalismaSaati = 09;  //Ea start hour
input int      robotCalismaDakikasi = 30; //Ea start minute
input int      robotDurmaSaati = 18;  //Ea stop hour
input int      robotDurmaDakikasi = 10; //Ea stop minute

int someIndicatorDefinition; 
  
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
   someIndicatorDefinition = iCustom(Symbol...
     
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {

  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//--- we work only at the time of the birth of new bar
            static datetime PrevBars=0;
            datetime time_0=iTime(0);
            if(time_0==PrevBars)
               return;
            PrevBars=time_0;
            
         
         
            MqlDateTime islemzamani;       
            datetime zaman = TimeCurrent();
            TimeToStruct(zaman,islemzamani);
            int robotTradeBaslamaZamani = (robotCalismaSaati*3600) + (robotCalismaDakikasi*60);
            int robotTradeSonlanmaZamani = (robotDurmaSaati*3600) + (robotDurmaDakikasi*60);
            int robotAnlikZaman = (islemzamani.hour*3600) + (islemzamani.min*60);
            ZeroMemory(islemzamani);
   

          double closeM1[]; 
          ArraySetAsSeries(closeM1,true); 
          CopyClose(Symbol(),PERIOD_M1,0,5,closeM1);
         
          double ... [];
          ArraySetAsSeries (...,true);
          CopyBuffer(someIndicatorDefinition,3,0,100,...);
   

   //Sell  Close ---------------------------------------------------------------------------------------------
                                 if(
                                      (closeM1[1] > ...[1])
                                      ||
                                      ( robotAnlikZaman >= robotTradeSonlanmaZamani)
                                   )
                                    if(sell_islem_sayisi>0)
                                       ClosePositions(POSITION_TYPE_SELL);
   // Buy Close --------------------------------------------------------------------------------------------- 
                                 if(
                                      ( closeM1[1] < ...[1] )   
                                       ||
                                       ( robotAnlikZaman >= robotTradeSonlanmaZamani)
                                   )
                                    if(buy_islem_sayisi>0)
                                       ClosePositions(POSITION_TYPE_BUY);
                                       
                                       
                                       
   // Open buy ---------------------------------------------------------------------------------
   
   if(
      buy_islem_sayisi==0 
      && sell_islem_sayisi==0
      )
                                {
                                 //--- check condition on BUY
                                 if(
                                     
                                      (robotAnlikZaman > robotTradeBaslamaZamani && robotAnlikZaman < robotTradeSonlanmaZamani ) 
                                      &&
                                      closeM1[1] > Highest m1 candle of robot start hours & minutes  <------------------------------------------------------------------
                                    
                                    )
                                   {
                                    if() {}
                                     m_trade.Buy(...);
                                   }
    
    
    // Open sell: ----------------------------------------------------------------------------------    
                                 //--- check condition on SELL
                                 else 
                                    if (
                                        (robotAnlikZaman > robotTradeBaslamaZamani && robotAnlikZaman < robotTradeSonlanmaZamani )
                                       &&
                                      closeM1[1] < Lowest m1 candle of robot start hours & minutes  <------------------------------------------------------------------   
                                       )
                                   
                                   {
                                    if() {...}
                                     m_trade.Sell(...);
                                   }
                                }
  
void OnTradeTransaction(const MqlTradeTransaction &trans,
                        const MqlTradeRequest &request,
                        const MqlTradeResult &result)
  {
//---

  }

...