# Sandbox.Curve.AddOrReplacePoint

```csharp
bool AddOrReplacePoint(in Frame keyframe)
```

Add given keyframe to this curve.

### Parameters

- `in keyframe` (`Frame`)

### Returns

`bool`: True if we added a new point. False if we just edited an existing point.

Declared in [Sandbox.Curve](/api/Sandbox.Curve).
Assembly: `Sandbox.System`.