> For the complete documentation index, see [llms.txt](https://fto-2.gitbook.io/fto-indicators-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://fto-2.gitbook.io/fto-indicators-docs/configure_indicator/set-empty-value.md).

# SetEmptyValue

Sets the value to be used for empty or undefined indicator values.

## Syntax

```typescript
SetEmptyValue(emptyValue: number): void
```

## Parameters

* `emptyValue` - A number representing the value to use for empty or undefined indicator values.

## Return Value

This method does not return a value.

## Description

The `SetEmptyValue` method defines what value should be used when an indicator value is empty, undefined, or cannot be calculated. This is commonly used to prevent drawing lines or markers when there is insufficient data to calculate the indicator.

## Example

```typescript
// Set empty values to zero
this.api.SetEmptyValue(0)

// Use a negative value to clearly identify missing data points
this.api.SetEmptyValue(-1)

// Common practice is to use a very large negative number
this.api.SetEmptyValue(-999999)
```