# On Alpha Change

## Overview

![The On Alpha Change Node.](https://2523600638-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MIspkFTPkuGkv4UgQGs-2530645121%2Fuploads%2Fgit-blob-852cc58cf04feeb2abf28ee69de5cd665cd89f67%2Fnode-on-alpha-change.png?alt=media)

**On Alpha Change** is an **Event Listener** **Node** used for executing a **Logic Branch** when the **Alpha** value of an **Object** changes.

## Attributes

| Attribute | Type         | Description                                                                            |
| --------- | ------------ | -------------------------------------------------------------------------------------- |
| `Object`  | **ObjectID** | The **Object** in which a change of the **Alpha** value triggers the **Logic Branch**. |

## Outputs

| Output             | Type      | Description                                                                                                                            |
| ------------------ | --------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| *Pulse Output* (►) | **Pulse** | A standard **Output Pulse**, to move onto the next **Node** along the **Logic Branch**, once this **Node** has finished its execution. |
| `Alpha`            | **Float** | The modified **Alpha** value.                                                                                                          |

## See Also

* [**Events**](https://docs.incari.com/incari-studio/2021.2/toolbox/events)
* [**Object**](https://docs.incari.com/incari-studio/2021.2/toolbox/events/object)
* [**Alpha**](https://docs.incari.com/incari-studio/2021.2/getting-started/attributes/common-attributes/sprite#alpha)