So I created a very basic heightmap, and I wanted to import it with TESAnnwyn as an .esp so that I can begin work on the landmass, however, whenever I import the image, the landmass size is far too large (120x120 cells, jeez), I wanted the landmass to be around 7-9 cells square, but I don't have the slightest idea what to do to make it so, I read through the readme and while there are scale commands for the height of the imported landmass, there doesn't seem to be any for y and x size.

That being said, what should I do? Is there a specific command I should use? I'm really stuck at this point.