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# Closes

## Definition

Holds an array of **ISeries`\<double\>`** objects holding historical bar close prices. A **ISeries`\<double\>`** object is added to this array when calling the [AddDataSeries()](/developer/desktop-sdk/references/common/adddataseries) method. Its purpose is to provide access to the closing prices of all **Bars** objects in a multi-instrument or multi-time frame script.

## Property Value

An array of **ISeries`\<double\>`** objects.

## Syntax

`Closes[int barSeriesIndex][int barsAgo]`

## Examples

```csharp
protected override void OnStateChange()
{
     if (State == State.Configure)
     {
         // Adds a 5-minute Bars object to the strategy and is automatically assigned
         // a Bars object index of 1 since the primary data the strategy is run against
         // set by the UI takes the index of 0.
         AddDataSeries("AAPL", BarsPeriodType.Minute, 5);
     }
}

protected override void OnBarUpdate()
{
     // Compares the primary bar's close price to the 5-minute bar's close price
     if (Closes[0][0] > Closes[1][0])
         Print("The primary bar's close price is greater");
}
```