Trilon

I can't manage the cordinate, when i try it it wont't happened

Where can i change the cordinates in this script?

I want to create a safezone but i didn't find any good script for this. Somebody can create for me? I use DayZ mod. Cordinates: X:2904.0771484375, Y: -1145.755859375, Z: 11.14050102233 width:250 depth: -50 height:50 Please i don't know how can i create it. I tried it but i failed.