As for world edit problem I can point you here http://youtrack.sk89q.com/issueMobile/WORLDEDIT-3220
Also made a topic in programing for my plugin to get upside down half slabs work and so if you need more things added (like implementing some of the funny commands.) I can just add it in.
Also made a topic in programing for my plugin to get upside down half slabs work and so if you need more things added (like implementing some of the funny commands.) I can just add it in.