> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://documentation.celestory.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# ⛓ Variables

Variables are used to define the memory of the app via key indicators.

There are 5 types of variables (click to be redirected to the corresponding article):

**Boolean:**
[✅ Set up true/false conditions
](https://documentation.celestory.io/en/article/set-up-truefalse-conditions-7weaef/)

**Numeric:**
[🧮 Set up numeric conditions
](https://documentation.celestory.io/en/article/set-up-numerical-conditions-1abufjd/)

**Text**
[💬 Customize a text/score
](https://documentation.celestory.io/en/article/personalize-a-textscore-1b0rm3c/)

**Image:**
[🖼️ Image variable](https://documentation.celestory.io/en/article/image-variable-1ncan7j/)

**List**
[ 🎒 Create an inventory](https://documentation.celestory.io/en/article/inventory-69yrke/)