[FLOW3-general] Setting Parameters for Backend Module

[st at cabag.ch]

Hello there,

I'm currently working on a project for a phoenix/flow3 application  
that also contains an additional module.

It was quite easy to set up a new module (which really surprised me  
and made me overly happy) but I haven't found out, how I could set up  
some settings for the module (currently I have all my parameters  
hard-coded which makes it quite ugly).

Is there a way so that I can tell my backend Plugin over a  
Settings.yaml file how it has to behave and what parameters it should  
use?

I imagined that it might look something like this:
TYPO3:
   TYPO3:
     modules:
       t3v4administration:
         label: 'TYPO3 Backend'
         submodules:
           typo3backend:
             label: 'Liste'
             controller:  
'\XXX\TYPO3v4Container\Controller\Module\Administration\OldBackendController'
             properties:
               extensionUrl:
                 type: string
                 label: 'Url der Extension'
                 default: 'http://xxx.xx/'
                 category: contentSettings
                 reloadOnChange: false

And now I'd like to get the value set in extensionUrl to use it in my  
module. For the frontend it worked well, since I can access parameters  
over pluginRequest but as I expected, this doesn't work for the backend.

Thank you for any help :-)

Greetings Tizian