I believe Bukz was saying that if over 6000 cubes in your map have an absolute (not average) ceiling height of 30 cubes or above then it doesn't meet the requisites.
* Frogulis is pleased.
EDITZ: and /showmapstats will show you how many cubes go over this limit
* Frogulis is pleased.
EDITZ: and /showmapstats will show you how many cubes go over this limit