Umm, I know there's like a multi-zone code with like (startX = 3000, startY = 4249, endx = 3500, endy = 4440)
Just copy the method and change multi or w/e to donar.
Next find,
you must be in the wilderness
And then you should see like if isinWild() {
Find the method for Wild and change to Donar
So it'll be like if isinDonar() {
Then make it so you're character is floating. If you find the command ::god, you can use the code from that to make you float.
Just try this,
Peace.