one trade per condition

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bool DoesTradeExist()
{
   
   TicketNo = -1;
   
   if (OrdersTotal() == 0) return(false);
   
   for (int cc = OrdersTotal() - 1; cc >= 0 ; cc--)
   {
      if (!OrderSelect(cc,SELECT_BY_POS)) continue;
      
      if (OrderMagicNumber()==MagicNumber && OrderSymbol() == Symbol() )      
      {
        
       
         TicketNo = OrderTicket();
         return(true);        

Im trying to make  EA to make only 1 trade per condition, but it makes multiple trades , where im wrong ?

  
int Number_of_Orders()
  {
   TicketNo = -1;

   if(OrdersTotal() == 0)
     {
      return(0);
     }

   for(int cc = OrdersTotal() - 1; cc >= 0; cc--)
     {
      if(!OrderSelect(cc, SELECT_BY_POS))
        {
         return(-1);
        }

      if(OrderMagicNumber() == MagicNumber && OrderSymbol() == Symbol())
        {
         TicketNo = OrderTicket();
         return(1);
        }
     }

   return(0);
  }


Error occurred: 

if(Number_of_Orders() < 0)



Send new order only::

if(Number_of_Orders() == 0)
  
//=============================================================================
bool O_R_CheckForHistory(int ticket)
{
   
   
   int lastTicket = OrderTicket();

   int cnt = 0;
   int err = GetLastError(); // so we clear the global variable.
   err = 0;
   bool exit_loop = false;
   bool success=false;

   while (!exit_loop) {
      /* loop through open trades */
      int total=OrdersTotal();
      for(int c = 0; c < total; c++) {
         if(OrderSelect(c,SELECT_BY_POS,MODE_TRADES) == true) {
            if (OrderTicket() == ticket) {
               success = true;
               exit_loop = true;
            }
         }
      }
      if (cnt > 3) {
         /* look through history too, as order may have opened and closed immediately */
         total=OrdersHistoryTotal();
         for(c = 0; c < total; c++) {
            if(OrderSelect(c,SELECT_BY_POS,MODE_HISTORY) == true) {
               if (OrderTicket() == ticket) {
                  success = true;
                  exit_loop = true;

what about here ?

 
Dimitar Pavlov #: what about here ?


Elaborate/Detail your question further: what do you expect from the code above? What error is occurring? ...

 
Dimitar Pavlov #: what about here ? 
bool O_R_CheckForHistory(int ticket){
   int lastTicket = OrderTicket();

You can not use any Trade Functions until you first select an order.

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