Is your feature request related to a problem? Please describe.
When using a chunkloader in the nether and opening the GUI, this is the map:

Describe the solution you'd like

It would be nice if somehow the map shown in the nether is made from the Y level vertical chunk where the chunk loader is.
Here is a picture taken from JourneyMap, taken where the chunkloader is located, as an example:

I changed it so in any dimension which has a ceiling, the map show blocks at the current y-level instead of the top of the world.

It is available now in Chunk Loaders version 1.2.0.
Thank you for the suggestion!