From 4754f660c753f096f4caa76b64eb1dee0fd5f389 Mon Sep 17 00:00:00 2001
From: dordsor21 <dordsor21@gmail.com>
Date: Sat, 8 Jan 2022 17:46:28 +0000
Subject: [PATCH] Fix #1524 Also brings in line with upstream

---
 .../java/com/sk89q/worldedit/command/ExpandCommands.java     | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/command/ExpandCommands.java b/worldedit-core/src/main/java/com/sk89q/worldedit/command/ExpandCommands.java
index 73230bf89..b9823daac 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/command/ExpandCommands.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/command/ExpandCommands.java
@@ -104,11 +104,12 @@ public class ExpandCommands {
 
     private static void expandVert(LocalSession session, Actor actor, World world) throws IncompleteRegionException {
         Region region = session.getSelection(world);
+        int height = world.getMaxY() - world.getMinY();
         try {
             long oldSize = region.getVolume();
             region.expand(
-                    BlockVector3.at(0, (world.getMaxY() + 1), 0),
-                    BlockVector3.at(0, -(world.getMaxY() + 1), 0)
+                    BlockVector3.at(0, height, 0),
+                    BlockVector3.at(0, -height, 0)
             );
             session.getRegionSelector(world).learnChanges();
             long newSize = region.getVolume();