[android-components](../../index.md) / [mozilla.components.browser.engine.gecko.glean](../index.md) / [GeckoAdapter](index.md) / [onBooleanScalar](./on-boolean-scalar.md)

# onBooleanScalar

`fun onBooleanScalar(metric: `[`Metric`](https://mozilla.github.io/geckoview/javadoc/mozilla-central/org/mozilla/geckoview/RuntimeTelemetry/Metric.html)`<`[`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/browser/engine-gecko-beta/src/main/java/mozilla/components/browser/engine/gecko/glean/GeckoAdapter.kt#L39)