---
title: "init(fineConversionValue:lockPostback:coarseConversionValue:conversionTypes:)"
framework: adattributionkit
role: symbol
role_heading: Initializer
path: "adattributionkit/postbackupdate/init(fineconversionvalue:lockpostback:coarseconversionvalue:conversiontypes:)"
---

# init(fineConversionValue:lockPostback:coarseConversionValue:conversionTypes:)

Creates a new postback update with the conversions values, conversion types, and lock indication you provide.

## Declaration

```swift
init(fineConversionValue: Int, lockPostback: Bool, coarseConversionValue: CoarseConversionValue? = nil, conversionTypes: [PostbackUpdate.ConversionType]? = nil)
```

## Parameters

- `fineConversionValue`: An integer that represents the fine conversion value.
- `lockPostback`: A Boolean value that indicates whether the system can lock the postback, reducing the system time to deliver a signal.
- `coarseConversionValue`: An optional CoarseConversionValue enumeration value that represents the coarse conversion value. Defaults to nil.
- `conversionTypes`: An optional array of conversion types the system uses to determine which postbacks to update. Defaults to nil and the system updates all types of postbacks by default.