[android-components](../../../index.md) / [mozilla.components.concept.engine.prompt](../../index.md) / [PromptRequest](../index.md) / [Confirm](index.md) / [onConfirmNegativeButton](./on-confirm-negative-button.md)

# onConfirmNegativeButton

`val onConfirmNegativeButton: (`[`Boolean`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)`) -> `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/engine/src/main/java/mozilla/components/concept/engine/prompt/PromptRequest.kt#L272)

callback to notify that the user has clicked the negative button.

### Property

`onConfirmNegativeButton` - callback to notify that the user has clicked the negative button.