Beginner form question - Field value is 'null'

   public function form(Form $form): Form
    {
        return $form
            ->schema([
                TextInput::make('subject')->maxLength(255)->required(),
                Textarea::make('message')->minLength(10)->maxLength(50000),
            ])
            ->statePath('data');
    }

    public function create(): void
    {
        dd($this->form->getState());
    }