> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.ninjatrader.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ninjatrader.com/_mcp/server.

# Inputs

## Definition

Holds an array of **ISeries`\<double\>`** objects holding the main data input. 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 main input all **Bars** objects in a multi-instrument or multi-time frame script.

## Property Value

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

## Syntax

`Inputs[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 input price to the 5-minute bar's input price
     if (Inputs[0][0] > Inputs[1][0])
         Print("The primary bar's input is greater");
}
```