This is actually a common occurence. What you have to do is make a new Page in the editor at the very top, call it something like For showing Text.
Paste this into the page:
Font.default_name = ['Palatino Lynotype','Arial']
Font.default_size = 24
and then save the Script Editor and see if that works. It should. Hope I helped.
As a side note, this is something on this site, you should of searched. But eh. It's fine, just trying help yea out. Good luck!