# sourceObject

> A reference to a Object that acts a key for this binding.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.Playables](/engine/6000.7/script-reference/unityengine/playables.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public Object sourceObject { get; set; }
```

### Remarks

In Timeline, the track for this binding is assigned.