Help adding maps to mainmenu

[Kusan]

Someone please tell me what I'm doing wrong: I hex edit the senario name, I open up the mainmenu gloabls and add it, , I FTP the mainmenu and map to my Xbox, the map is there, but when the countdown finishes, it takes me to a black screen and stays there. The map I'm modding is containment. I've looked on all the major modding sites and still CANNOT figure this out. Please, please help.

[shade45]

its probably just something wrong with the map thats why it not loading, b/c it sounds like you added the map to the main menu correctly