@m_adam Thank you very much for your reply. But while I was waiting for a reply, I experimented and realized that the Python tag suits me much better than the xpresso system, and rewrote the whole scene overnight). Have a great day.

@ferdinand Your solution of replacing the doc = c4d.documents.GetActiveDocument() line with doc: c4d.documents.BaseDocument = op.GetDocument() really worked. From my point of view, as an ordinary person, your level of understanding of the code seems to be something beyond the realm of possibility. I wish you a good day and thank you again for your help.