---
title: allParameterValues
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/auaudiounit/allparametervalues
---

# allParameterValues

Special read-only property for KVO.

## Declaration

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

## Discussion

Discussion KVO notifications are issued on this property in response to certain events where potentially all parameter values are invalidated—for example, the selection of a preset.

## See Also

### Related Documentation

- [fullState](audiotoolbox/auaudiounit/fullstate.md)

### Querying Parameters

- [parameterTree](audiotoolbox/auaudiounit/parametertree.md)
- [parametersForOverview(withCount:)](audiotoolbox/auaudiounit/parametersforoverview(withcount:).md)