I do not know what language you speek but your english is better than I can speek your language.
I am at work right now. I can walk you through the set up when I am home. It will work from a switch. However the amount of flap movement will be set using one of the three knobs on the face of your TX. It is not as hard as it sounds. If I say something you do not understand. Please ask me about it.
Also is your TX menu in english?

David