updatedStoch.mq4

//+------------------------------------------------------------------+
//|                                                         test.mq4 |
//|                        Copyright 2022, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2022, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+

double pSt=0;

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int OnInit()
  {
//---

//---

//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---

  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   string signal = "";
   double st = iStochastic(_Symbol,_Period,3,3,14,MODE_EMA,20/80,MODE_MAIN,0);

   printf(StringConcatenate("Current st : ", st, " Previous St : ", pSt));
//   double pSt = iStochastic(_Symbol,_Period,3,3,14,MODE_EMA,20/80,MODE_MAIN,0);
   if(pSt < 80 &&  st > 80 && Bid > High[1])
     {
      signal = "BUY";
      printf("Buy Signal Generated");
      int a = OrderSend(_Symbol,OP_BUY,0.40,Ask,2,7,Ask+8,"RMA",0,0,0);
     }
   else
      if(pSt > 80 &&  st < 80 && Ask < Low[1])
        {
         signal = "SELL";
         printf("Sell Signal Generated");
         int a = OrderSend(_Symbol,OP_SELL,0.40,Ask,2,7,Ask+8,"RMA",0,0,0);
        }
   pSt = st;
  }
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+