I am trying to configure the netherside for the phase spell and my world is not named the default world. I cannot manage to get the text configuration correct for it to work could someone give me the exact text and what to replace with my world name.

Please let me know if you were not able to get this working!

It might be easier to do /mconfig editor spell phase - there will be a map of worlds there, change the ones that say world to your world name.