I do exactly that. But when I open the hyperlink, I am not brought to the bookmark I chose, but to this template I mentioned. It´s an old Word template I made as an experiment and later left unused in the folder, where Word keeps those kind of things. So to me it makes no sense at all. There is not even a similarity between the bookmark´s name and the template´s name.
Maybe I should mention, that the field codes are only on the pagenumbers in the right side of the TOC. The text entries on each line have no codings, and that´s where I´d like the hyperlinks to be.