---
title: "additionalValue(forKey:)"
framework: storekit
role: symbol
role_heading: Instance Method
path: "storekit/skoverlay/appclipconfiguration/additionalvalue(forkey:)"
---

# additionalValue(forKey:)

Returns the object associated with the key.

## Declaration

```swift
func additionalValue(forKey key: String) -> Any?
```

## Parameters

- `key`: The string that identifies an additional value.

## Return Value

Return Value The associated value of the key.

## Discussion

Discussion Additional values are values you use to verify and associate an app installation with an ad campaign. For more information, see SKAdNetwork.

## See Also

### Verifying Advertising Campaigns

- [campaignToken](storekit/skoverlay/appclipconfiguration/campaigntoken.md)
- [providerToken](storekit/skoverlay/appclipconfiguration/providertoken.md)
- [setAdditionalValue(_:forKey:)](storekit/skoverlay/appclipconfiguration/setadditionalvalue(_:forkey:).md)