# $pricesField->when()

- Source: `src/Form/Mixin/When.php#L56` <https://github.com/getkirby/kirby/blob/6.0.0-beta.1/src/Form/Mixin/When.php#L56>
- Inherited from Kirby, not part of the Merx API. See <https://getkirby.com/docs/reference>.

```php
$pricesField->when(): null|array
```

## Return type

`null|array`

## Parent class

`Wagnerwagner\Merx\PricesField` inherited from `Kirby\Form\Field`