Last bar open Time

The open time for the current bar is Time[0]

The open time for the last completed bar is Time[1] 

Ok, now it works with Time[1].

The problem is that if I write  

total = OrdersTotal();
  Num_Order_Long_6  = 0;
  Num_Order_Short_6 = 0;
  
  for(cnt=0;cnt<=total;cnt++)
     {
     OrderSelect(cnt, SELECT_BY_POS, MODE_HISTORY);
     
        if (OrderType()==OP_BUY)
           { 
           Num_Order_Long_6++;
           }
        if (OrderType()==OP_SELL)
           { 
           Num_Order_Short_6++;
           }   
         
     }    

It returns   Num_Order_Long_6 > 0 and it's ok because I have an order in the history trades.

If I write

total = OrdersTotal();
  Num_Order_Long_6  = 0;
  Num_Order_Short_6 = 0;
  
  for(cnt=0;cnt<=total;cnt++)
     {
     OrderSelect(cnt, SELECT_BY_POS, MODE_HISTORY);
     if (OrderSymbol()==Symbol() && OrderMagicNumber()==1  &&  OrderOpenTime()>= Time[1]  )
        {  
        if (OrderType()==OP_BUY)
           { 
           Num_Order_Long_6++;
           }
        if (OrderType()==OP_SELL)
           { 
           Num_Order_Short_6++;
           }   
        }  
     }    

It gives me 0 and I don't understand why. The magic numer and the symbol are ok. 

You are using OrdersTotal() as a counter, but checking history

Use OrdersTotal() for open trades and OrdersHistoryTotal() when checking history