> 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-indicator-id-key.md).

# SetIndicatorIdKey

Sets a unique identifier key for the indicator.

## Syntax

```typescript
SetIndicatorIdKey(key: string): void
```

## Parameters

* `key` - A string containing a unique identifier for the indicator.

## Return Value

This method does not return a value.

## Description

The `SetIndicatorIdKey` method assigns a unique identifier key to the indicator. This key can be used for internal reference, persistence, or to identify the indicator in various operations.

## Example

```typescript
// Set a simple key
this.api.SetIndicatorIdKey('RSI_14')

// Use a more complex key with parameters
this.api.SetIndicatorIdKey(`MA_${period}_${method}_${price}`)

// Generate a unique key
this.api.SetIndicatorIdKey(`CustomIndicator_${Date.now()}`)
```