# Doubles Configure the details for parameter variables that contain floating-point values. ## Topics ### Creating an intent parameter [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, controlStyle: IntentParameter.DoubleControlStyle, inclusiveRange: IntentParameter.InclusiveRange?, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, optionsProvider: OptionsProvider)`](/documentation/AppIntents/IntentParameter/init(title:description:controlStyle:inclusiveRange:requestValueDialog:inputConnectionBehavior:optionsProvider:)-3la41) Creates an app intent parameter with a list of selectable options. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, controlStyle: IntentParameter.DoubleControlStyle, inclusiveRange: IntentParameter.InclusiveRange?, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, optionsProvider: OptionsProvider, resolvers: () -> Spec)`](/documentation/AppIntents/IntentParameter/init(title:description:controlStyle:inclusiveRange:requestValueDialog:inputConnectionBehavior:optionsProvider:resolvers:)-2iugu) Creates an app intent parameter with a list of selectable options that can convert the selected value. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, default: Value.UnwrappedType?, controlStyle: IntentParameter.DoubleControlStyle, inclusiveRange: IntentParameter.InclusiveRange?, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior)`](/documentation/AppIntents/IntentParameter/init(title:description:default:controlStyle:inclusiveRange:requestValueDialog:inputConnectionBehavior:)-4mc52) Creates an app intent parameter. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, default: Value.UnwrappedType?, controlStyle: IntentParameter.DoubleControlStyle, inclusiveRange: IntentParameter.InclusiveRange?, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, resolvers: () -> Spec)`](/documentation/AppIntents/IntentParameter/init(title:description:default:controlStyle:inclusiveRange:requestValueDialog:inputConnectionBehavior:resolvers:)-9yclx) Creates an app intent parameter that can convert the selected value. [`typealias InclusiveRange`](/documentation/AppIntents/IntentParameter/InclusiveRange-swift.typealias) ### Accessing the control style [`var controlStyle: IntentParameter.DoubleControlStyle?`](/documentation/AppIntents/IntentParameter/controlStyle-5ryd1) [`enum DoubleControlStyle`](/documentation/AppIntents/IntentParameter/DoubleControlStyle) An enum that describes the control style of a Double parameter. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)