How come the map hack only works on egypt??

How come the map hack only works on egypt??

some1 plz tell me how to get under other maps like monaco was fun lol or maybe the hack needs fixing?

name is glitch is not a hack....every map have got a point where u can go outside....search on forum......THKS ME
LOL

i know how to get under HAK in ghost mode but it kills you everytime