Validator ignore condition

Need Help
1

I validate password field.

        $validator
            ->scalar('password')
            ->maxLength('password', 150)
            ->requirePresence('password', 'create')
            ->notEmptyString('password', __('Fill password.'), function ($context) {
                return !empty($context['data']['password_fill']);
            })
            ->add('password', [
                'minLength' => [
                    'rule' => ['minLength', 5],
                    'message' => __('Min length is {0}', 5),
                ],
            ]);

How to allow not to fill in the password if the password_fill field has the value 0? The condition in notEmptyString is ignored. Thank you.