Worldedit does not affect the height of 319

[Line1337]

WorldEdit Version

7.3.10

Platform Version

1.21.4

Confirmations

• I am using the most recent Minecraft release.
• I am using a version of WorldEdit compatible with my Minecraft version.
• I am using the latest or recommended version of my platform software.
• I am NOT using a hybrid server, e.g. a server that combines Bukkit and Forge. Examples include Arclight, Mohist, and Cardboard.
• I am NOT using a fork of WorldEdit, such as FastAsyncWorldEdit (FAWE) or AsyncWorldEdit (AWE)

Bug Description

This problem appeared when I upgraded from minecraft 1.21 to 1.21.4 and downloaded worldedit version 7.3.10. Everything is still working fine on version 1.21 (I just checked).
But in the new version, worldedit for some reason does not affect the 319 height

Expected Behavior

When executing the //set 0 command, the selected blocks should have disappeared

Reproduction Steps

1. //pos1
2. //pos2
3. //set 0

Anything Else?

No response

[octylFractal]

This is valid, I missed a change in the return value from Mojang's world max refactor in 1.21.3.