---
title: "updateConversionValue(_:coarseConversionValue:lockPostback:)"
framework: adattributionkit
role: symbol
role_heading: Type Method
path: "adattributionkit/postback/updateconversionvalue(_:coarseconversionvalue:lockpostback:)"
---

# updateConversionValue(_:coarseConversionValue:lockPostback:)

Updates the conversion value with the provided fine and coarse conversion values, and optionally locks the postback, reducing the amount of time the system needs to deliver a signal.

## Declaration

```swift
static func updateConversionValue(_ fineConversionValue: Int, coarseConversionValue: CoarseConversionValue, lockPostback: Bool) async throws
```

## Parameters

- `fineConversionValue`: An integer that defines the fine conversion value.
- `coarseConversionValue`: One of the doc://com.apple.AdAttributionKit/documentation/AdAttributionKit/CoarseConversionValue values.
- `lockPostback`: A Boolean value that indicates whether the system can lock the postback, reducing system time to deliver a signal.

## Mentioned in

Receiving postbacks in multiple conversion windows Understanding AdAttributionKit and SKAdNetwork interoperability Configuring an advertised app Identifying the parameters in a postback Receiving ad attributions and postbacks