Thanks John (Again ) works like a charm!

And again an additional question:

Is there a way to set a minimum font-size and if it is reached (because of to much text in the box) then only display a certain number of characters?

Ex.
there is 100 characters in a textbox (100 x 100) and because of autofit the fontsize is reduced to 4 pt.
Instead of that I would like the fontsize to be set to 7 pt. and only 70 characters displayed followed by "..."