---
title: "subscript(dynamicMember:)"
framework: swift
role: symbol
role_heading: Instance Subscript
path: "swift/duration/unitsformatstyle/attributed-swift.struct/subscript(dynamicmember:)-65x7d"
---

# subscript(dynamicMember:)

## Declaration

```swift
subscript<T>(dynamicMember key: WritableKeyPath<Duration.UnitsFormatStyle, T>) -> T { get set }
```