Integer

The #[Integer] property type will render a numeric input field in the field properties panel, allowing only integer values to be entered.

Various attributes can be set to control the behavior of the input field. Such as:

min - the minimum allowed value
max - the maximum allowed value
step - the increment step (e.g. 0.1, 0.01, etc.)
unsigned - whether the value is unsigned (true for positive, false for negative)

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

#[Integer(
    label: 'Age',
    instructions: 'Enter your age in years.',
    min: 0,
    max: 120,
    step: 1,
    unsigned: true,
)]
protected ?int $age = null;

​Result

Result