Milonic JavaScript Menu

Thanks to Maz & John,
In my excited state to get started I didn't read some of the instructions properly - never done that before!!! Anyway, part one of my question is sorted.
About the MYSQL bit, I've done a bit of forum searching and will carry on. However, if anyone can save me time with a ...

Hi,
I've just purchased a professional license and downloaded a vertcal menu. When I change a menu option in the menu_data.js file the option retains the default text and no sub-menus appear. Am I missing something?
Also, what I really want to do is use menu data from a MYSQL database - any pointers ...