How to reset a SystemPerformance Collection variable every day

[Don22Trader1]

Hello,

My strategy requires to constantly monitor SystemPerformance.WinningTrades/LosingTrades throughout the day. I realize that these values are carried over to the next day but I need them to reset at the beginning of each day.

Is it possible to reset these types of values or do I need to create a counter for my winning and losing trades and reset those values?

[NinjaTrader_ChelseaB]

Hello Don22Trader1,

The SystemPerformance cannot be reset and will contain all trades made by the strategy instance.

You would need to save the trades to your own collection if you are wanting to reset this.

Possibly a List<Trade> collection could be used.

[Don22Trader1]

I tried to create a counter that will reset like this:

protected override void OnBarUpdate()
{

if (Bars.IsFirstBarOfSession && IsFirstTickOfBar)
{
WinsCounter = 0;
}

Trade lastTrade = SystemPerformance.AllTrades[SystemPerformance.AllTrades.Count - 1];

if (lastTrade.ProfitCurrency > 0)
{
WinsCounter++;
}
}

since i've applied this, the strategy will not run on a backtest and i recieve this error
"Error on calling 'OnBarUpdate' method on bar 691: 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 dont understand how to get around this.

[NinjaTrader_ChelseaB]

Hello Don22Trader1,

With any index used this will need to be larger than the collection.

Below is a link to a forum post on index errors.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/1046200-indicator-that-calculate-in-different-chartime?p=1048513#post1048513

The last trade cannot be found until there is at least 1 trade.

So SystemPerformance.AllTrades.Count must be greater than 0.

[PaulMohn]

Hello Don22Trader1,

The SystemPerformance cannot be reset and will contain all trades made by the strategy instance.

You would need to save the trades to your own collection if you are wanting to reset this.

Possibly a List<Trade> collection could be used.

Where do you initialize that list?

///Class Variable
List<Trade> myTrades;

/// else if (State == State.Configure) ?
{
myTrades= new List<Trade>();
}

[NinjaTrader_Gaby]

Hello PaulMohn,

Yes, similar to a custom Series. You could also create a custom Trade series (Series<Trade>).

https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.list-1?view=net-8.0