Hello macropod,
thanks a lot for the reply. Unfortunately it doesn't work 100% correctly because the user must press enter every time to change line otherwise the text extends the page. I would like the user not to notice that he is writing in an activeX text box though.

I am trying to solve the problem with macro commands but no success yet. Is there any way to take the length of each line in a text box? Then a if case would solve the problem.