> For the complete documentation index, see [llms.txt](https://voxel-inc.gitbook.io/voxel-inc-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://voxel-inc.gitbook.io/voxel-inc-docs/mechanics/effect-id.md).

# ↳ Effect ID

The effect's ID is will let you distinguish display names from internal identifiers, separating the actual name from the one that calls the effect's execution in game.

<figure><img src="https://2175010478-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FglWNFDJNGZfCxpNMetLw%2Fuploads%2FN803h4Ryw2ms4TZIVNxH%2FId.png?alt=media&amp;token=d856c569-d456-4f1d-88e9-36468699ee3e" alt="" width="128"><figcaption></figcaption></figure>

### What's an Identifier?

The ID of an effect is its <mark style="background-color:yellow;">internal name</mark>, separated from the display name and used **only** to call the effect for specific actions, such as **commands** or **executions**.

Here's how it looks:

<figure><img src="https://2175010478-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FglWNFDJNGZfCxpNMetLw%2Fuploads%2FrXVSXEDr19SRAUzFdvYU%2FSID.png?alt=media&amp;token=74944223-6b19-4587-bd9f-b38a93a823be" alt="" width="375"><figcaption></figcaption></figure>

{% hint style="warning" %}
IDs may **not** contain spaces or special chars, but **only** lowercase letters, numbers or underscores.
{% endhint %}

***

### When using the effect

Remember to type in the <mark style="background-color:$success;">ID</mark> and not the <mark style="background-color:$danger;">DISPLAYNAME</mark>, otherwise you won't find it!\
We recommend an identifier that doesn't exceed a lenght of **20** chars.

***