It'd be great if we could change data values, especially item damage values.

I'm using this plugin on my server in conjunction with a resource pack to make custom items and it would be very useful to retroactively change the damage value of tools (including having them reach negative "durabilites").

Thanks for the tip. I added the Damage variable (with no limits) for items. Download the latest build on Jenkins (Minecraft 1.13).

No 1.12.2 backwards compatibility? We're not upgrading until spigot and all our plugins are ready :s

Sorry, no. Many things changed in 1.13 making it incompatible with 1.12, and normally I don't update old versions. If I see that people are holding back on updating to 1.13 I may consider develop a 1.12 version in parallel. I'm also short on time on the next few weeks, so don't expect many updates, sorry.

Alright, I plan on updating in the future anyways. It just seems like Spigot isn't ready for an upgrade yet, judging from the news on the main page.