# OnValidate()

> This function is called when the importer is loaded or a value is changed in the Inspector.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.AssetImporters](/engine/6000.3/script-reference/unityeditor/assetimporters.md)

```csharp
public void OnValidate()
```

### Remarks

You can use this to ensure that when you modify data in an editor, that data stays within a certain range.