Error on calling 'OnBarUpdate' method on bar 1

[Bogdan097]

Hello everyone, i have a problem whith my code.

I want to keep an eye on the candle, the number of which I indicate in the input "CountDirCandle". When I choose to trade in real time, I don't have any errors. But when I use the Strategy Analyzer and the parameter CountDirCandle > 1 I get an error "Strategy 'NewCDC': Error on calling 'OnBarUpdate' method on bar 1: You are accessing an index with a value that is invalid since it is out-of-range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart."

What check did I miss or what am I doing wrong? Here is my code below:

            int CountDirCandle = 2;

            if (CurrentBars[0] < 1)
                return;
            
            
            if((ToTime(Time[0]) >= TradingStart && ToTime(Time[0]) < TradingEnd ))
            {
                 // Set 1
                if ((Buy == true)
                     && (Position.MarketPosition == MarketPosition.Flat)
                     && (Open[CountDirCandle] < Close[CountDirCandle]))
                {
                    EnterLong(Convert.ToInt32(Lots), "Long");
                }
            
                 // Set 2
                if ((Sell == true)
                    && (Position.MarketPosition == MarketPosition.Flat)
                     && (Open[CountDirCandle] > Close[CountDirCandle]))
                {
                    EnterShort(Convert.ToInt32(Lots), "Short");
                }
            }​

[bltdavid]

Try this,

if (CurrentBars[0] < Math.Max(1, CountDirCandle))
    return;​

[rockmanx00]

You need to change it to
if (CurrentBars[0] < 1 || CurrentBars[0] < CountDirCandle)
return;

What is happening is, on the very first bar, it is trying to Check for Open[2] which is the 2 candles prior. That does not exist yet causing the error. You need to wait, not only one bar, but the appropriate amount of bars depending on what CountDirCandle is set to. You can just use the variable to check for this, so you can get away without having to change it when hard coding it. So if you decided to change it to 10, you don't need to do anything else. It will return until you get to the appropriate bar number.

[bltdavid]

Good reading here.

[Bogdan097]

Thank you all very much, it helped