How in blade template show params in maintenance-mode?

I want to add maintenance-mode support for my Laravel 5.7 app as written here https://laravel.com/docs/5.7/configuration#maintenance-mode

with command in console :

php artisan down --message="Upgrading Database" --retry=60

using template

resources/views/errors/503.blade.php.

it works, but if there is a way in my console to show values of message and retry params entered in console command?

I tried to show variables with these names, but got error that such variables do not exists...

Thanks!

via Chebli Mohamed