---
title: value
framework: TelephonyMessagingKit
role: symbol
role_heading: Instance Property
platforms: [iOS 26.0+]
path: telephonymessagingkit/mmspartcontent/mmscustomheader/value
---

# value

The value of the custom header.

## Declaration

```swift
let value: String
```

## See Also

### Accessing header properties

- [key](telephonymessagingkit/mmspartcontent/mmscustomheader/key.md)