---
title: "init(description:defaultValue:defaultUnit:defaultUnitAdjustForLocale:supportsNegativeNumbers:requestValueDialog:inputConnectionBehavior:resolvers:)"
framework: appintents
role: symbol
role_heading: Initializer
path: "appintents/intentparameter/init(description:defaultvalue:defaultunit:defaultunitadjustforlocale:supportsnegativenumbers:requestvaluedialog:inputconnectionbehavior:resolvers:)-40ry4"
---

# init(description:defaultValue:defaultUnit:defaultUnitAdjustForLocale:supportsNegativeNumbers:requestValueDialog:inputConnectionBehavior:resolvers:)

Creates an app intent parameter with a default unit for the measurement.

## Declaration

```swift
convenience init<Spec>(description: LocalizedStringResource? = nil, defaultValue: Double? = nil, defaultUnit: IntentParameter<Value>.Dispersion? = nil, defaultUnitAdjustForLocale: Bool = false, supportsNegativeNumbers: Bool = true, requestValueDialog: IntentDialog? = nil, inputConnectionBehavior: InputConnectionBehavior = .default, @ResolverSpecificationBuilder<Value.UnwrappedType> resolvers: @escaping () -> Spec) where Spec : ResolverSpecification
```

## Parameters

- `description`: Additional details about this parameter.
- `defaultValue`: The default value for this parameter. People can specify a different value.
- `defaultUnit`: The default unit that should be selected when this parameter is initially created.
- `defaultUnitAdjustForLocale`: Whether or not the default unit should adjust to match someone’s locale. Default value is false.
- `supportsNegativeNumbers`: Whether or not this parameter supports negative number inputs. Default value is true.
- `requestValueDialog`: A prompt that asks a person to provide the parameter value.
- `inputConnectionBehavior`: An enum that indicates how this parameter receives the output from a preceding app intent.
- `resolvers`: An object that converts a value of another type to this parameter’s type.