---
title: maxValue
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionpropertyattributes/maxvalue
---

# maxValue

The maximum value a property supports.

## Declaration

```swift
@NSCopying var maxValue: ObjectType? { get }
```

## See Also

### Inspecting Attributes

- [isReadOnly](coremediaio/cmioextensionpropertyattributes/isreadonly.md)
- [minValue](coremediaio/cmioextensionpropertyattributes/minvalue.md)
- [validValues](coremediaio/cmioextensionpropertyattributes/validvalues.md)