Need help...should be easy

[Mike0405]

I am getting my feet wet with NT8 having been a longtime NT7 user...for some reason, I can't get this simple script to enable on a 1 minute chart:

#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.Indicators;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

//This namespace holds Strategies in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Strategies
{
    public class test : Strategy
    {
        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description                                    = @"Enter the description for your new custom Strategy here.";
                Name                                        = "test";
                Calculate                                    = Calculate.OnBarClose;
                EntriesPerDirection                            = 1;
                EntryHandling                                = EntryHandling.AllEntries;
                IsExitOnSessionCloseStrategy                = true;
                ExitOnSessionCloseSeconds                    = 10;
                IsFillLimitOnTouch                            = false;
                MaximumBarsLookBack                            = MaximumBarsLookBack.TwoHundredFiftySix;
                OrderFillResolution                            = OrderFillResolution.High;
                OrderFillResolutionType                        = BarsPeriodType.Minute;
                OrderFillResolutionValue                    = 1;
                Slippage                                    = 0;
                StartBehavior                                = StartBehavior.WaitUntilFlat;
                TimeInForce                                    = TimeInForce.Gtc;
                TraceOrders                                    = false;
                RealtimeErrorHandling                        = RealtimeErrorHandling.StopCancelClose;
                StopTargetHandling                            = StopTargetHandling.PerEntryExecution;
                BarsRequiredToTrade                            = 20;
                // Disable this property for performance gains in Strategy Analyzer optimizations
                // See the Help Guide for additional information
                IsInstantiatedOnEachOptimizationIteration    = true;
            }
            else if (State == State.Configure)
            {
                SetStopLoss(@"", CalculationMode.Currency, (Low[1] - 0.25) , false);
            }
        }

        protected override void OnBarUpdate()
        {
            if (BarsInProgress != 0)
                return;

            if (CurrentBars[0] < 1)
                return;

            EnterLongStopLimit(Convert.ToInt32(DefaultQuantity), (High[1] + 0.25) , (High[1] + 0.25) , @"test");
        }
    }
}

As you can see, this is a simple bit of code generated by NT8 itself using the wizard.

Yet when I try and enable it, I keep getting this error in the logs:

Strategy 'test': Error on calling 'OnStateChange' method: You are accessing an index with a value that is invalid since it is out-of-range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart.

I am tearing out what is left of my hair trying to see what is wrong...anybody have any ideas?

I am putting it on a 1-min chart of ES with 5 days of data on it...

[Emma1]

else if (State == State.Configure) //another state with parameters(apply, enable)



AddDataSeries("ES 03-20", Data.BarsPeriodType.Minute, 1, Data.MarketDataType.Last);


protected override void OnBarUpdate() { if (BarsInProgress != 0) return; if (CurrentBar<0)return; if()... condition... { EnterLongStopLimit(Convert.ToInt32(DefaultQuantity ), (High[1] + 0.25) , (High[1] + 0.25) , test); } }

[NinjaTrader_ChrisL]

Hi Mike0405, thanks for your post.

The strategy is accessing Low[1] in your SetStopLoss method. You can not access data during the OnStateChanged method like this. Set your top loss before you go into the position instead:

protected override void OnBarUpdate()
{
    if (BarsInProgress != 0)
        return;

    if (CurrentBars[0] < 1)
        return;

    if (Position.MarketPosition == MarketPosition.Flat)
    {
        SetStopLoss(@"", CalculationMode.Currency, (Low[1] - 0.25) , false);
        EnterLongStopLimit(Convert.ToInt32(DefaultQuantity), (High[1] + 0.25) , (High[1] + 0.25) , @"test");
    }
}

Kind regards,

-ChrisL

[madams212121]

#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.Indicators;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

//This namespace holds Strategies in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Strategies
{
public class test : Strategy
{
protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"Enter the description for your new custom Strategy here.";
Name = "test";
Calculate = Calculate.OnBarClose;
EntriesPerDirection = 1;
EntryHandling = EntryHandling.AllEntries;
IsExitOnSessionCloseStrategy = true;
ExitOnSessionCloseSeconds = 10;
IsFillLimitOnTouch = false;
MaximumBarsLookBack = MaximumBarsLookBack.TwoHundredFiftySix;
OrderFillResolution = OrderFillResolution.High;
OrderFillResolutionType = BarsPeriodType.Minute;
OrderFillResolutionValue = 1;
Slippage = 0;
StartBehavior = StartBehavior.WaitUntilFlat;
TimeInForce = TimeInForce.Gtc;
TraceOrders = false;
RealtimeErrorHandling = RealtimeErrorHandling.StopCancelClose;
StopTargetHandling = StopTargetHandling.PerEntryExecution;
BarsRequiredToTrade = 20;
// Disable this property for performance gains in Strategy Analyzer optimizations
// See the Help Guide for additional information
IsInstantiatedOnEachOptimizationIteration = true;
}
else if (State == State.Configure)
{

}
}

protected override void OnBarUpdate()
{
if (BarsInProgress != 0)
return;

if (CurrentBars[0] < 1)
return;
SetStopLoss(@"", CalculationMode.Currency, (Low[1] - 0.25) , false);
EnterLongStopLimit(Convert.ToInt32(DefaultQuantity ), (High[1] + 0.25) , (High[1] + 0.25) , test);
}
}
}

[NinjaTrader_Jim]

Hello madams212121,

Did you have a question involving this code?

Please note that when calling SetStopLoss in OnBarUpdate, the stop loss should be reset to an initial level when the strategy is flat before the next entry. The example below demonstrates.

SamplePriceModification - https://ninjatrader.com/support/help...of_stop_lo.htm

Please also use "[CODE]" blocks when sharing code to ensure the code stays well formatted and readable.

We look forward to assisting.