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# endAction(_:)

Tells the host application that the plug-in is done accessing parameters.

```
func endAction(_ sender: Any!)
```

## Parameters

`sender`

The view class that implements this protocol. Typically passed as self.

## Discussion

It is important to note that OSC plug-ins (implementing [`FxOnScreenControl_v4`](/documentation/professional_video_applications/FxOnScreenControl_v4)) should not use [`startAction(_:)`](/documentation/professional_video_applications/FxCustomParameterActionAPI_v4/startAction(_:)) and [`endAction(_:)`](/documentation/professional_video_applications/FxCustomParameterActionAPI_v4/endAction(_:)), as the host is already aware that parameters are likely to change.

---

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