Question Custom Attribute

[Noy]

I know this can be done through PDC and a entire custom system. But I still wonder if this can be done through RegistryEvent or something like that in the future?

 

[JavierFlores09]

As attributes are right now, that wouldn't be possible since they are not synchronized to the client. Modifying its registry would end up kicking the player due to invalid data being sent. This is something one can workaround in a hackish way, however it isn't Paper would be interested in touching (nor something feasible through plugins since it involves modifying some codecs)