Spigot Potion Shop 1.0

I like it but you should add in the capability for custom potions. Such as potions with multiple effects.

 

I love the concept, but maybe try to add it so when you right click a sign it would open up!

 

Guys and Gals, can someone please show me how I'd add a specific potion to the GUI? Im kind of new to the whole config thing, everything's appreciated!

 

Sadly doesnt work on 1.12.1