Heyho! Alright, so, i'm developing a MMO-plugin as i've said a few times already, and i'm currently working on a EXP-system like wynncraft's(note: inspired, not 100% like it). How can i assign, let's say the number 20 to a specific entity, and when i kill it, i can give that number to the player? I have never really worked with changing entities behaviour, so i don't know where to start. How does wynncraft do this? Thanks, i really appreciate all the help i can get.