How to disable Nether only in my custom dimension(id = 8)？

Like disable Nether, only in dimension id 8 .

If i use / jed unregister -1 ,How undo that?

by the way if you unregister -1 and USE Nether Portals.
GAME CRASH!

CAN I disable Nether Portals only in my custom dimension ?

The only proper way to do this is just to disable teleporting from dimension 8 to dimension -1.
Currently there are options to disable teleporting TO a dimension, or FROM a dimension, but those are global options, meaning that disabling teleporting to dim -1 would prevent it in every dimension. I guess I'll have to add new teleport target dimension black-/whitelist options that can be used per dimension.

I suggest that we also provide an option to disable use Hell Portal.
if i teleporting from dimension 8 to dimension -1
then USE Hell Portal in dimension -1
you MUST teleporting to the overworld

The vanilla Nether portals only work between dimensions 0 and -1 anyway. So you should not even be able to light them up in dimension 8, unless you use "id": 0" in the dimensiontype of dimension 8. But even then, if you then go to the Nether and use the portal in the Nether, it will take you to dimension 0, unless you have some other mod that permanently links them/remembers where you came from.

I use ID 877 or 8
I can light them up Nether portals in dimension 877 or 8

maybe a BUG?
dimensions.json file:
https://pastebin.com/Q967rZZJ

MC 1.12.2
forge 14.23.5.2780
justenoughdimensions-1.12.2-1.6.0-dev.20181121.160048
ONLY ADD jed mod

If you don't use the "require_exact_match": true option inside the dimensiontype object, then JED will use one of the pre-registered DimensionType entries, which has "id": 0, which will allow nether portals to be lit.

So this config won't allow Nether portals to be created in dimension 877: https://pastebin.com/jVmcnGeK

(Also be sure to use the latest 1.6.0 beta version of JED, and not the old 1.5.5.)

That is a new option in the 1.6.0 version, and those are not yet documented on the CurseForge page. I'll have to completely rewrite and improve the documentation anyway, and I'll try to do that after I finish the remaining things that I want the final 1.6.0 version to have. For now, the changes and new options in 1.6.0 are listed here: https://pastebin.com/raw/28jeWZyv

Think you That is work.
You are nice to let me know.

i can not find require_exact_match in page https://minecraft.curseforge.com/projects/just-enough-dimensions.

Where is the full user manual?

THIS MOD IS COOL!!!

Think you .