> For the complete documentation index, see [llms.txt](https://malbersanimations.gitbook.io/animal-controller/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://malbersanimations.gitbook.io/animal-controller/scriptable-architecture/scriptables/bool-var.md).
# Bool Var
## Overview
Bool variables are Scriptable Assets that contain a bool value. They can be referenced in any script and be shared around in a project.
## How to use it
To declare a Bool Var use this code. Make sure to have the namespace:
*`using MalbersAnimations.Scriptables;`*
```csharp
using MalbersAnimations.Scriptables;
public class Example : Monobehaviour
{
public BoolVar myVar
}
```
This is how it looks in the Inspector:
## Variable Reference
There is a better way to use the scriptable variables. Instead of using **`BoolVar`** class, use **`BoolReference`** instead:
```csharp
using MalbersAnimations.Scriptables;
using UnityEngine;
public class Example : MonoBehaviour
{
public BoolReference myVar = new BoolReference();
}
```
This is how it looks in the Inspector:
That way you have the option to use a local value or a Scriptable (global) value.
Sharing scriptable variables is an extremely useful tool to have shared values between scripts.
## Parameters
### Value
The actual value of the scriptable variable.
### Debug \[🪲]
When enabled, the console will print a log every time the scriptable variable changes its value
### Description
Developer description to give a better explanation of what the variable does.
## Internal Events
Scriptable Variables can be listened to using the OnValue changed action.
This is the way of using it via script:
```csharp
using MalbersAnimations.Scriptables;
using UnityEngine;
public class Example : MonoBehaviour
{
public BoolReference myVar = new BoolReference();
private void OnEnable()
{
myVar.Variable.OnValueChanged += OnValueChanged;
}
private void OnDisable()
{
myVar.Variable.OnValueChanged += OnValueChanged;
}
private void OnValueChanged(bool value)
{
//listen to value changes here
}
}
```
---
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