Hi, How can I change Symbol from this RSI indicator

[Wayo Cnx]

This is RSI indicator in MT5 and I need to write my own one. only change the Symbol. But I can't find where to change from current symbol to another Symbol

help me please

#property indicator_separate_window
#property indicator_minimum 0
#property indicator_maximum 100
#property indicator_level1 30
#property indicator_level2 70
#property indicator_buffers 3
#property indicator_plots   1
#property indicator_type1   DRAW_LINE
#property indicator_color1  DodgerBlue
//--- input parameters
input int InpPeriodRSI=14; // Period
//--- indicator buffers
double    ExtRSIBuffer[];
double    ExtPosBuffer[];
double    ExtNegBuffer[];

int       ExtPeriodRSI;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
void OnInit()
  {
//--- check for input
   if(InpPeriodRSI<1)
     {
      ExtPeriodRSI=14;
      PrintFormat("Incorrect value for input variable InpPeriodRSI = %d. Indicator will use value %d for calculations.",
                  InpPeriodRSI,ExtPeriodRSI);
     }
   else
      ExtPeriodRSI=InpPeriodRSI;
//--- indicator buffers mapping
   SetIndexBuffer(0,ExtRSIBuffer,INDICATOR_DATA);
   SetIndexBuffer(1,ExtPosBuffer,INDICATOR_CALCULATIONS);
   SetIndexBuffer(2,ExtNegBuffer,INDICATOR_CALCULATIONS);
//--- set accuracy
   IndicatorSetInteger(INDICATOR_DIGITS,2);
//--- sets first bar from what index will be drawn
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,ExtPeriodRSI);
//--- name for DataWindow and indicator subwindow label
   IndicatorSetString(INDICATOR_SHORTNAME,"RSI("+string(ExtPeriodRSI)+")");
  }
//+------------------------------------------------------------------+
//| Relative Strength Index                                          |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const int begin,
                const double &price[])
  {
   if(rates_total<=ExtPeriodRSI)
      return(0);
//--- preliminary calculations
   int pos=prev_calculated-1;
   if(pos<=ExtPeriodRSI)
     {
      double sum_pos=0.0;
      double sum_neg=0.0;
      //--- first RSIPeriod values of the indicator are not calculated
      ExtRSIBuffer[0]=0.0;
      ExtPosBuffer[0]=0.0;
      ExtNegBuffer[0]=0.0;
      for(int i=1; i<=ExtPeriodRSI; i++)
        {
         ExtRSIBuffer[i]=0.0;
         ExtPosBuffer[i]=0.0;
         ExtNegBuffer[i]=0.0;
         double diff=price[i]-price[i-1];
         sum_pos+=(diff>0?diff:0);
         sum_neg+=(diff<0?-diff:0);
        }
      //--- calculate first visible value
      ExtPosBuffer[ExtPeriodRSI]=sum_pos/ExtPeriodRSI;
      ExtNegBuffer[ExtPeriodRSI]=sum_neg/ExtPeriodRSI;
      if(ExtNegBuffer[ExtPeriodRSI]!=0.0)
         ExtRSIBuffer[ExtPeriodRSI]=100.0-(100.0/(1.0+ExtPosBuffer[ExtPeriodRSI]/ExtNegBuffer[ExtPeriodRSI]));
      else
        {
         if(ExtPosBuffer[ExtPeriodRSI]!=0.0)
            ExtRSIBuffer[ExtPeriodRSI]=100.0;
         else
            ExtRSIBuffer[ExtPeriodRSI]=50.0;
        }
      //--- prepare the position value for main calculation
      pos=ExtPeriodRSI+1;
     }
//--- the main loop of calculations
   for(int i=pos; i<rates_total && !IsStopped(); i++)
     {
      double diff=price[i]-price[i-1];
      ExtPosBuffer[i]=(ExtPosBuffer[i-1]*(ExtPeriodRSI-1)+(diff>0.0?diff:0.0))/ExtPeriodRSI;
      ExtNegBuffer[i]=(ExtNegBuffer[i-1]*(ExtPeriodRSI-1)+(diff<0.0?-diff:0.0))/ExtPeriodRSI;
      if(ExtNegBuffer[i]!=0.0)
         ExtRSIBuffer[i]=100.0-100.0/(1+ExtPosBuffer[i]/ExtNegBuffer[i]);
      else
        {
         if(ExtPosBuffer[i]!=0.0)
            ExtRSIBuffer[i]=100.0;
         else
            ExtRSIBuffer[i]=50.0;
        }
     }
//--- OnCalculate done. Return new prev_calculated.
   return(rates_total);
  }
//+------------------------------------------------------------------+

[Wayo Cnx]

I want to make [input string customSymbol;]

Example 

current symbol is EURUSD

but RSI customSymbol is USDJPY

Then I will put 2 RSI indicators on each other

current symbol and  another Symbol to see Forex Correlation

[[Deleted]]

Your topic has been moved to the section: Technical Indicators
Please consider which section is most appropriate — https://www.mql5.com/en/forum/172166/page6#comment_49114893

[Conor Mcnamara]

That script isn't really what you want to look at. That's not portable code, and that will work on any symbol automatically.  You can use iRSI to make your own custom RSI indicator, or else you can code the RSI Algo from scratch

[Wayo Cnx]

phade #:
That script isn't really what you want to look at. That's not portable code, and that will work on any symbol automatically.  You can use iRSI to make your own custom RSI indicator, or else you can code the RSI Algo from scratch

Thank you very much ^^