Moving average on spread (high minus low)

[The_Wiz]

Hi

I'm trying to make a indicator which uses a moving average of the spread (high minus low). I'm not interested in using the ATR(1) because I don't want to include any gaps.

My problem is that I get an error CS0200 and CS0029

Can anyone please help. The following is my code.

#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

//This namespace holds Indicators in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Indicators
{
public class test: Indicator
{

SMA _maspread;
private Series<double> _spread;


protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"test signals";
Name = "test";
Calculate = Calculate.OnBarClose;
IsOverlay = false;
DisplayInDataBox = true;
DrawOnPricePanel = true;
DrawHorizontalGridLines = true;
DrawVerticalGridLines = true;
PaintPriceMarkers = true;
ScaleJustification = NinjaTrader.Gui.Chart.ScaleJustification.Right;
//Disable this property if your indicator requires custom values that cumulate with each new market data event.
//See Help Guide for additional information.
IsSuspendedWhileInactive = true;
NarrowSpreadRatio = 0.8;
WideSpreadRatio = 1.5;

}

else if (State == State.Configure)
{

}

}

protected override void OnBarUpdate()
{
if(CurrentBar < 14) return;

_spread[0] = High[0] - Low[0];
_maspread[0] = SMA(_spread, 14);
}

[tradesmart]

You've declared class vars but have not initialized them in OnStateChange().
_maspread = SMA(14);
_spread = new Series<double>(this);

[PaulMohn]

https://ninjatrader.com/support/helpguides/nt8/NT%20HelpGuide%20English.html?using_a_series_or_dataseries_o.htm