# Variables

Think of a variable as a box that can be named and used to store "things." In this context, "things" are values such as numbers, text, dates, etc.

The Set Variable block is a powerful tool that allows you to create a variable, select its format, and assign it a value.

To use the card, simply select it from the Logic.

<figure><img src="/files/ebFkg20K0P9EvN5FFs1J" alt=""><figcaption></figcaption></figure>

## Setting a Variable

You can choose an existing variable or create a new one.&#x20;

<figure><img src="/files/AF7Mraol2ApKLHU3XvPX" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
The variable name must start with an alphabet and can only include underscores (\_) as special characters.
{% endhint %}

Simply type the name, select the format, and click "create."

When it comes to selecting the format of the variable, you have 6 formats to choose from.

* Text
* Number
* Boolean
* Date
* Object
* Array

<figure><img src="/files/HgjrmVqkR9QG44KfSPEq" alt=""><figcaption></figcaption></figure>

## Entering the Value

You can enter the value you want to assign to the variable. It can also be dependent on the values of other variables.

## How to Use Variables

To utilize a variable in your chatbot, you can select or type it in the following format:

```
{{variable.VARIABLE_NAME}}
```

## Where to Use Variables

Variables can be incorporated in various contexts, anywhere inside the chatbot including:

* **Messages**: Personalize responses based on session data.
* **Integrations**: Use variables to interact with external services.
* **API Calls**: Pass variables in API requests to maintain context.


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