function to close the currently selected order in metatrader 4

mql Close Open Order.mq4

// bool result = CloseOpenOrder(5);

// closes the currently selected order
bool CloseOpenOrder(int slippage){
   double price;
   if(OrderType() == OP_SELL) {
      price = Ask;
   } else {
      price = Bid;
   }
   
   bool closeResult = OrderClose(OrderTicket(),OrderLots(),price,slippage,clrYellow);
   if(!closeResult){
      Print(GetLastError());
   }
   
   return closeResult;
}