Dynamic text scroller in MX04?

Ok, I’ve done the “create a text scroller in MX tut.” Works fine. I’ve opened that MX fla in MX04, again works fine. Here’s the problem-if I try to create the same dynamic text box in MX04, it won’t let me make the box smaller than the content it holds. Example-in the tut, the dynamic text box is 131 px high but holds 1100 px worth of text. If I try to make a new dynamic text box with all of the same parameters (dynamic, multiline) the text box will resize itself to fit the content inside. So I wind up with a textbox that’s 1100 px high. What am I doing wrong? In the attached file, Kirupa’s on the left & mine is on the right. Thanks