# Set Alpha

## Overview

![The Set Alpha Node.](https://879976444-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MIspkFTPkuGkv4UgQGs-41739140%2Fuploads%2Fgit-blob-db1756037cd0781c1ec7aca72468752c22416110%2Fset-alpha.PNG?alt=media)

**Set Alpha** sets the value of a specified **Object**'s `Alpha` **Attribute** .

The **Set Alpha** **Node** only works with **Objects** that have **Attribute**'s from the **Sprite** category, such as **List**, **Image Sequence**, **Web Sprite**, **Sprite**, and **Text**.

## Attributes

| Attribute       | Type         | Description                                                                                         |
| --------------- | ------------ | --------------------------------------------------------------------------------------------------- |
| `Object`        | **ObjectID** | The **Object** you wish to set the `Alpha` of if one is not provided in the `Object ID` **Socket**. |
| `Default Alpha` | **Float**    | The default value of the **Object** color space's `alpha` component.                                |

## Inputs

| Input             | Type         | Description                                                           |
| ----------------- | ------------ | --------------------------------------------------------------------- |
| *Pulse Input* (►) | **Pulse**    | A standard **Input Pulse**, to trigger the execution of the **Node**. |
| `Object ID`       | **ObjectID** | The ID of the **Object** whose `Alpha` value you would like to set.   |
| `Alpha`           | **Float**    | The desired value of the **Object**'s `Alpha` **Attribute**.          |

## 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. |

## See Also

[**Get Alpha**](https://docs.incari.com/incari-studio/2.0/toolbox/incari/object/get-alpha)

## External Links

* [*Alpha value*](https://en.wikipedia.org/wiki/Alpha_compositing)