number of opened trades

[Forex Trader]

This function should return number of opened trades per symbol. It's ok except on the last pair on the chart. IF there (on the last pair) are no opened trades this function always returns -1.
Here is the function:

int subTotalTrade()
{
int
cnt,
total = 0;

for(cnt=0;cnt<OrdersTotal();cnt++)
{
OrderSelect(cnt,SELECT_BY_POS,MODE_TRADES);
if(OrderType()<=OP_SELL &&
OrderSymbol()==Symbol() )total++;
}
return(total);
}