laravel 5.1 - rewrite url variable in middleware then pass new value to additional middleware and controller

I wish to manipulate the url variable in middleware then to pass new vaule to some additional middleware for checking, then pass new value to controller

Arbitrary example: domain.com/1 -> middleware to add 3 to 1 -> middleware to check new number 4 against database -> pass new number to controller

My route:

Route::get('{v}', [
        'middleware' => ['rewrite','dbCheck'],
        'uses' => 'video@search'
    ]);

I get the variable in the middlewares using $v = $request->v; - how do I return the rewritten variable to the next middleware and ultimately the controller?

via Chebli Mohamed