Errot using variables in Dutch, English goes fine

If I activate variables, I get an error message and if I do not go through a table. What goes wrong? Multiple browsers tried. Can not work with variables.
But. Changing to English, everything workes fine.
After making the table and going back to Dutch the error message appears agang, but... the LO works fine.
Why can't I make the table in Dutch and get an error?
Ronald