# fileName

> The default file name used by newly created instances of this type.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public string fileName { get; set; }
```

### Remarks

Note that any custom file names must end in '.asset' to be correctly processed by Unity.