Indicator throws an exception

[madhav_ab]

This is a very simple code: HIdentified is an indicator that return 1 when One of the Instrument makes a high while LIdentified return 1 when one of the instruments makes a low. I am seeing and exception
: "10/26/2011 10:51:17 PM Default Error on calling 'OnBarUpdate' method for indicator 'WForEntry' on bar 0: You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart. "

CODE: WForEntry - using 5 min tick bars
protected override void Initialize()
{
//Add Comparison Product
Add(ComparisonProduct, PeriodType.Minute, TimePeriod);

Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "WForEntryPlot"));
Overlay = false;
}

protected override void OnBarUpdate()
{
if (BarsInProgress == 0)
{
if(HIdentified(comparisonProduct,5)[0] == 1)
{
WForEntryPlot.Set(Lows[0][1] - 1 * TickMultiplier);
dataSetTime = Time[0];

}
else if ((LIdentified(comparisonProduct, 5).Count > 0)&& (LIdentified(comparisonProduct, 5)[0] == 1))
{
WForEntryPlot.Set(Highs[0][1] + 1 * TickMultiplier);
dataSetTime = Time[0];
}

if(dataSetTime != Time[0])
{
WForEntryPlot.Set(0);
}
}


}

[NinjaTrader_Matthew]

Hello,

You're likely running into an issue explained in the following forum post from our Tips section:

http://www.ninjatrader.com/support/f...ead.php?t=3170

Please try adding the following snippet to the beginning of your code in OnBarUpdate()

if (Current Bar < 1)
return;

You need to ensure you have enough bars on the chart to calculate correctly.

[madhav_ab]

That worked