Relic Castle

I'm trying to implement an ability which doubles Special Defense under a specific weather condition, so I looked up how the scripts handle Swift Swim to manage that. While I was doing that, I noticed that there wasn't a script section for things that raised Sp. Defense, or any stat other than Speed, actually. With that as the case, how do I add something that raises another stat? Do I need to make a new section in the script for it?