Passing Custom Command arguments to Job on Redis Queue

New to Lumen and wanting to use it for a backend app using Redis.

I have the following Custom Command -

class Add extends Command { protected $signature = 'region:add {region}'; protected $description = 'Add region node as required'; protected $region;

public function __construct()
{
    parent::__construct();
}

public function handle()
{
    try{
        $this->region = $this->argument('region');
        customLogging::Console('arg value = '.$this->region);

        if($this->region){
            Queue::pushOn('region', new Add($this->region));
            customLogging::Log('region','info', 'Region Added to queue successfully - '.$this->region);
            customLogging::Console('Region Added to queue successfully - '.$this->region);
        }else{
            customLogging::Console('Region Add New - no region given.');
        }

    }catch(Exception $e){
        customLogging::Console('Region Add New - '.$e);
        customLogging::Log('region','info', 'Add Region - '.$e);
    }
}

}

And I am trying to pass the $region variable to a Job. the commands grabs the argument fine -

class Add extends Job implements ShouldQueue { use InteractsWithQueue, SerializesModels;

protected $region;

public function __construct($region)
{
    if(isset($region)){
        $this->region = $region;
    }else{
        Log::info('Region add - missing region');
    }
}

public function handle()
{
    try{
        //
        $this->CreateServer();
        customLogging::Console('Job:arg value = '.$this->region);
        customLogging::Log('region','info', 'New region server requested - '.$this->region);

    }catch(Exception $e){
        customLogging::Console('Region Add Job - '.$e);
        customLogging::Log('region','info', 'Add Job - '.$e);
    }
}

function CreateServer(){}

}

But i keep getting the error and I am stuck -

lumen.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Call to a member function getArgument() on null in /var/www/html/core-director/vendor/illuminate/console/Command.php:256

Would appreciate any advice, hints.