# Sandbox.MovieMaker.TrackMetadata.ReferenceId

```csharp
System.Nullable<System.Guid> ReferenceId { get; set; }
```

ID of the [Sandbox.Component](/api/Sandbox.Component) or [Sandbox.GameObject](/api/Sandbox.GameObject) this track was created to target.

Declared in [Sandbox.MovieMaker.TrackMetadata](/api/Sandbox.MovieMaker.TrackMetadata).
Assembly: `Sandbox.Engine`.