---
title: "subscript(dynamicMember:)"
framework: corevideo
role: symbol
role_heading: Instance Subscript
path: "corevideo/cvattachmentcontainer/subscript(dynamicmember:)-3qlmo"
---

# subscript(dynamicMember:)

Get or set attachment value as a property of this object.

## Declaration

```swift
subscript<ModePreference, Value>(dynamicMember keyPath: KeyPath<Keys.Type, CVAttachmentKeyDefinition<ModePreference, Value>>) -> Value? where ModePreference : CVAttachmentModePreference, Value : CVAttachmentValueRepresentable { get set }
```