[[MG]Dimi]

look
Pos 1 ______ Pos 2
| |
| |
Pos 3______ Pos 4

^
|
Y
X---> =======Shows direction of rising X and Y

Go on All 4 positions and do /save. Then get exact coordinates as I tell you:

minx = from post 3 x
maxx = from pos 4 x
miny = from pos 3 y
maxy = from pos1 y

Dont use Pos 2 coz if you use 1,3 and 4 youll get right zone and using 4th pos might crash server