if (args.getString(0).equalsIgnoreCase("vert")
|| args.getString(0).equalsIgnoreCase("vertical")) {
Region region = session.getSelection(player.getWorld());
try {
int oldSize = region.getArea();
region.expand(
new Vector(0, (player.getWorld().getMaxY() + 1), 0),
new Vector(0, -(player.getWorld().getMaxY() + 1), 0));
session.getRegionSelector(player.getWorld()).learnChanges();
int newSize = region.getArea();
session.getRegionSelector(player.getWorld()).explainRegionAdjust(player, session);