You are quite welcome. Let me know if you run into problems. Remember that you should not have quite that many tiles if you use sphere to make the tiles into a tilemap.
The largest possible amount of tiles in the map is 30*20 = 600. Granted, 600 tiles means every single tile is unique. About 1/3 of your tiles may not be unique. You will need to use sphere though to find out. In total, I used about 384 tiles. It is possible with over 256 using my method... In my experience that is
This is my first tutorial and my first attempt at a hack is in progress as well. Once I put the pieces together, things worked out. Getting my map to work took many hours - I don't want to think about how many nights I kept getting problems. Then I decided to try something not in a tutorial and dissembled what I could of my work and found a solution. Quite a process, but quite rewarding in the end. I am glad I was at least able to spark interest in you!