[FLOW3-general] TYPO3.Form using RedirectFinisher with post

[Robin Lehrmann]

I want to create a Form for my ArticleModel:

article:
--name
--description
--articleGroup
--branch
--contact
--customer
--department
--materials
--images

ArticleModel: http://pastebin.com/QDZVJwMn
ArticleFactory: http://pastebin.com/YdYBsNAa
The form should send a post request to the create action. The create 
action expects an ArticleModel.
How can I use the RedirectFinisher with the model and how I can send it 
as post request ?

Its important, that materials and images should inserted as array.