---
title: parameter
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/audiounitparameterevent/parameter
---

# parameter

An identifier for this parameter event.

## Declaration

```swift
var parameter: AudioUnitParameterID
```

## See Also

### Fields

- [scope](audiotoolbox/audiounitparameterevent/scope.md)
- [element](audiotoolbox/audiounitparameterevent/element.md)
- [eventType](audiotoolbox/audiounitparameterevent/eventtype.md)
- [eventValues](audiotoolbox/audiounitparameterevent/eventvalues.md)