How to get VWAP in an Indicator

[ATMtrader0001]

So I have code that while it works, when I start NT8 I get errors in the Log and the Indicator get dropped from my Charts.

Here's the code pieces.

// Create the series to hold the VWAP entries
public Series<double> MyVWAP;

// Assign the VWAP Series to my Series <double>
MyVWAP = OrderFlowVWAP(VWAPResolution.Standard, BarsArray[0].TradingHours, VWAPStandardDeviations.None, 1, 2, 3).VWAP;

// Then assign the values to appear on the chart
Values[4][0] = MyVWAP[0];

How do I get this to work? What am I missing?

[NinjaTrader_ChelseaB]

Hello ATMtrader0001,

The issue is with public Series<double> MyVWAP;

This must use the XmlIgnore() attribute or will have errors when saving / restoring from xml.

https://ninjatrader.com/support/helpGuides/nt8/xmlignoreattribute.htm

[ATMtrader0001]

Thank you, I learned something new today.

That did it.