So I am making a UHC map, and I need help from someone to make a bedrock "border" all the way around the area I want the players to stay in. Obviously this is too hard for vanilla, so I need someone who can use worldedit. What I want is for someone to download the world (link below), build a border in worldedit, and reply with a link of the map with the finished border. The border center needs to be x=0, z=0, and each wall must extend and run along 500 on the x and z axis. I have attached a picture to show what I mean. The border of the square represents the bedrock border. The border must also go all the way down to y=0 and be as tall as y=250. If someone would do this, that would be amazing, and please make sure to give me your minecraft name so I can fully credit you for building the border. Thanks!