---
title: isCountChangeable
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/auaudiounitbusarray/iscountchangeable
---

# isCountChangeable

Determines whether the array can have a variable number of busses.

## Declaration

```swift
var isCountChangeable: Bool { get }
```

## Discussion

Discussion The base implementation default value is false.

## See Also

### Bus Array Methods and Properties

- [count](audiotoolbox/auaudiounitbusarray/count.md)
- [ownerAudioUnit](audiotoolbox/auaudiounitbusarray/owneraudiounit.md)
- [busType](audiotoolbox/auaudiounitbusarray/bustype.md)
- [subscript(_:)](audiotoolbox/auaudiounitbusarray/subscript(_:).md)
- [setBusCount(_:)](audiotoolbox/auaudiounitbusarray/setbuscount(_:).md)
- [addObserver(toAllBusses:forKeyPath:options:context:)](audiotoolbox/auaudiounitbusarray/addobserver(toallbusses:forkeypath:options:context:).md)
- [removeObserver(fromAllBusses:forKeyPath:context:)](audiotoolbox/auaudiounitbusarray/removeobserver(fromallbusses:forkeypath:context:).md)