# BuildCallbackVersionAttribute(uint)

> Constructor taking the version number for the callback.

## Definition

* **Type:** Constructor
* **Namespace:** [UnityEditor.Build](/engine/6000.7/script-reference/unityeditor/build.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public BuildCallbackVersionAttribute(uint version)
```

### Parameters

**** (\[uint]\(https\://learn.microsoft.com/dotnet/api/system.uint32)): Version number.