Script for automated resizing in Illustrator

Hi everyone, does anyone know if there is a script that would automate the creation of various ad sizes from one original signed off ad design? We create a lot of our ads rightly or wrongly in illustrator and need nearly 30 different advert sizes for each brief. We also need these to be exported in various sizes and formats? Anyone know of anything? My boss has suggested using creatopy but surely there is something within Adobe that allows us to do this now with the coming of age of AI?