# Some Usefull Tutorials

## Open Order

for opening a sample order in mql4 follow following syntax:

//
buy => ASK Price ...
sell => BID Price ...

```mql4
void OnTick() {
    //
    if (OrdersTotal() > 0) {
        return;
    }

    //
    // we are on bullish candle ...
    if (close[1] > open[1]) {
        //
        OrderSend(
            _Symbol, // Symbol ...
            OP_BUY, // Operation ...
            0.1 // Lot Size ( Volume ) ...
            Ask, // Open Order Price ...
            3, // tolerance ...
            Ask - 300 * _Point, // SL ...
            Ask + 150 * _Point, // TP ...
            NULL, // Trade Comment ...
            0, // Magic Number (user unique number) ...
            0, // Expiration ...
            Green // Arrow Line ...
        );
    }
}
```

## Counting Open Buy Positions

```mql4
int CountOpenBuyOrders() {
    //
    int result = 0;

    //
    for (int i = OrdersTotal() - 1; i >= 0; i--) {
        //
        OrderSelect(i, SELECT_BY_POSITION, MODE_TRADES);

        //
        string orderSymbol = OrderSymbol();

        //
        if (
            orderSymbol == _Symbol && 
            OrderType() == OP_BUY
        ) {
            result++;
        }
    }

    //
    return result;
}
```