Hidden

The #[Hidden] property type allows you to define a property that will not be displayed in the Freeform form builder's field properties panel. This comes in handy when you need to have a property who's value will be used by other properties or logic, and be pre-defined in code.

Generating a value for this property via a value generator is a common use case for hidden properties.

use Solspace\Freeform\Attributes\Property\Input\Hidden;
// ...

#[Hidden(
    label: 'Internal Identifier',
    defaultValue: 'default-identifier',
)]
protected string $internalIdentifier = 'my-secret-value';

The above example will create a property called "Internal Identifier" that will not be shown in the field properties panel.