Error:Object reference not set to an instance of an object.

[VarunDivakar]

First of all , I would like to thank the awesome support guys, as I know you are very prompt and clear in your responses. Keep up the good work guys.
I have a piece of code It is giving an Error: Error on calling 'OnBarUpdate' method for strategy 'CDCandle/0a84bcadcad749288376ff725280a69d': Object reference not set to an instance of an object.

protected override void Initialize()
{

CalculateOnBarClose = true;
Add(PeriodType.Minute,30);
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
if(CDMA(BarsArray[1],true, GomCDCalculationModeType.BidAsk, GomCDChartType.CumulativeChart, Color.Bisque, "Alert2.wav", false, 14, 3, 0.7, Color.Honeydew, "Alert1.wav", 1000000, 1).DeltaOpen[0] == null
|| CDMA(true, GomCDCalculationModeType.BidAsk, GomCDChartType.CumulativeChart, Color.Bisque, "Alert2.wav", false, 14, 3, 0.7, Color.Honeydew, "Alert1.wav", 1000000, 1).DeltaClose[0] == null
||Close[0] == null
|| Opens[1][0]== null
)

{
return;
}

else
{
// Condition set 1
if (CDMA(true, GomCDCalculationModeType.BidAsk, GomCDChartType.CumulativeChart, Color.Bisque, "Alert2.wav", false, 14, 3, 0.7, Color.Honeydew, "Alert1.wav", 1000000, 1).DeltaClose[0] > CDMA(BarsArray[1],true, GomCDCalculationModeType.BidAsk, GomCDChartType.CumulativeChart, Color.Bisque, "Alert2.wav", false, 14, 3, 0.7, Color.Honeydew, "Alert1.wav", 1000000, 1).DeltaOpen[0]
&& Close[0] > Opens[1][0]
)
{
EnterLong(DefaultQuantity, "");
}
}

Can you please tell what is wrong with the code, I beleive I might have missed some null exception. But, can't find where

[NinjaTrader_ChelseaB]

Hello VarunDivakar,

Thanks for your note.

You should use a check that there are enough bars for both series before calling a bar in that series.

For example:
if (CurrentBars[0] < 1 || CurrentBars[1] < 1)
return;

This requires that both Barsinprogress 0 has at least 1 bar and BarsInProgress 1 has 1 at least 1 bar.

Please let me know if this does not resolve the error.

[VarunDivakar]

Hi Chelsea,

Thank you for such a fast response. Now, I am faced with another error :

Enabling NinjaScript strategy 'CDCandle/d0c2db4f4ad44970b53cea27861f8708' : On starting a real-time strategy - StrategySync=WaitUntilFlat SyncAccountPosition=False EntryHandling=AllEntries EntriesPerDirection=1 StopTargetHandling=PerEntryExecution ErrorHandling=StopStrategyCancelOrdersClosePositio ns ExitOnClose=True/ triggering 30 before close Set order quantity by=Strategy ConnectionLossHandling=KeepRunning DisconnectDelaySeconds=10 CancelEntryOrdersOnDisable=False CancelExitOrdersOnDisable=True CalculateOnBarClose=True MaxRestarts=4 in 5 minutes

[NinjaTrader_ChelseaB]

Hello VarunDivakar,

This message means that the strategy was enabled and is providing information about the state of the strategy.

Do you have an error that I may assist with?

[VarunDivakar]

Hi, the strategy keeps getting unchecked and stops working as soon as check it in the strategy tab.

[NinjaTrader_ChelseaB]

Hello VarunDivakar,

Has the selected account been changed?

Are there any other error messages in the Log tab of the Control Center (in yellow)?