Scrollbar

Hi, can you please tell me if i could insert a scrollbar in Lectora on a pop-up and how to do it? On pop-up i mean when the user clicks on a button it opens a textbox on the same page, so i need to put a scrollbar on that text. And also, what to do if I have more than 50 variables that have to be true all at once (because I saw that I can't insert more than 50).

Thank you.