---
title: userDefinedAttributes
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avplayerinterstitialevent/userdefinedattributes
---

# userDefinedAttributes

Attributes of the event that the vendor or app defines.

## Declaration

```swift
var userDefinedAttributes: [AnyHashable : any Sendable] { get set }
```