Alright, seems to just be an issue with your config, mind sending me that?
I checked it over and it was a double bracket haha You should ask people to check carefully before asking to send over to save you the hassle haha
cheers 
hey, is there anything special i need to do to get it working with luckperms and nucleus? Screenshot - b7f0170cfcf32b484f9302437f7f5199 - Gyazo loaded it into a test server to check it out and mess with it but noticed its not changing the prefix.
It works perfectly for me, However there has always been a slight delay between when you set it and when nucleus picks it up as a new prefix.
Also make sure that " /lp user ### meta info " shows that the prefix is set at the top with 110 priority.
Will this get updated for API 7? 
here you go
Thank you @leelawd93
In our continuing effort to phase out the Plugin Releases category, this thread is being locked because the plugin is already listed on Ore.
Check it out: leelawd93 / MMCPrefix