How to fix this problem ?

[Pooh123]

I coded a simple indicator. This indicator is supposed to plot a histogram bar when the previous candle is an up candle. It compiles without problem. However, it just doesn't plot anything. After attaching it to the chart, the indicator window shows blank. The code is very simple, the OnBarUpdate() section only consists of one line. How to fix it ? The source code under OnBarUpdate() is as following:

protected override void OnBarUpdate()
{
Value[0]=(Close[1]>Open[1] ? 1:0);
}

The complete source code file is as attached.

Thank you in advance for anyone that can help. MyCustomIndicator1.cs

[NinjaTrader_ChelseaB]

Hello Pooh123,

On the first bar, there is no bar 1 bar ago. When CurrentBar is 0, Close[1] is an invalid index.

Are you getting any errors in the Log tab of the Control Center?

If you print the value of Value[0] does anything print?

[Pooh123]

Hello Chelsea,

Yes, you were right. I tried adding the following code and it worked:

if (CurrentBar < 1 ) return;


It solved the problem.

Thank you,
Pooh