@Cartayna your Tip with the Path was the right way,
i had the path corrected,
now it works perfectly,
I still have one question,
why has the heavy parking positions at Terminal 1 only 1 Jetways?,
does they do not have two Jetways?
Best reguards and thanks for your help!
Andreas 
Hello Andi, my pleasure and happy to hear that it helps. i will make a not of this in the instructions for FSX users. good to know.
Regarding the other finger that is not been removed from the EDDF scenery and replaced by a GSX2 is due to the complication that certain airports have that do not allow the GSX2 customization menu to fix. This is to the best of my knowledge, maybe in the case of EDDF Umberto can give us a hint in why those can not be removed.. Having said this:
1. (this case) there are certain airports where the jetways are part of the arquitecture of the terminals and part of them as a whole, and not an independent objetc. In EDDF, this seems to be the case, the one that we can remove is an independent object, thus we can work with this. This only happens in the HEAVY pos.
2. The SODES which are a bit more complex, you have to study them case by case. In my sceneries here attached i have done that for you.
3. Others have jetways that are not SODE, not part of the sceneries, but you can edit or eliminate certain files or folders of the scenery pack itself. All the ones that i could I did that for you (if is the case i tell you how to).
All this cases i have made them simple by droping folders, replacing and overwritting files, and so on, on a case by case.
Unfortunatelly i have not been able with EDDF as i suspect is part of the architecture (case 1).
Sorry.
Cheers.
