---
title: number
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/auaudiounitpreset/number
---

# number

The preset’s unique numeric identifier.

## Declaration

```swift
var number: Int { get set }
```

## See Also

### Preset Properties

- [name](audiotoolbox/auaudiounitpreset/name.md)