Can you do a screen capture and save in MS Paint as jpg file.
On English keyboard you can capture the screen by hitting the Print Scrn key in upper right hand corner of the keyboard and then past into MS Paint. In Paint draw a circle around problem.
It sounds to me like you are trying to do an Assembly level Extrusion with no sketch but between the language difference and no example I'm not sure.
You might also try posting your question in German as there are other German speakers here.
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