---
title: "init(mappingTransform:)"
framework: appintents
role: symbol
role_heading: Initializer
path: "appintents/isbetweencomparator/init(mappingtransform:)"
---

# init(mappingTransform:)

Declares support for Between comparisons between a property and user-supplied values.

## Declaration

```swift
init(mappingTransform: @escaping (InputType, InputType) -> ComparatorMappingType)
```

## Parameters

- `mappingTransform`: Closure that transforms the user-supplied value into the ComparatorMappingType output type.