no its when i insert buildings and i choose grass as "down" from the left tile set and then i choose a building tile as "Up" from the tileset i just insert that apears in the right box so then if i press save, it overwrites the grass tile and if i press a blank tile from the left tile set then "Down" becomes black, so i dont know what i do, so how do i place my building on the left tileset with the grass as background to it?