Cheating a map

[ulquiorracfr]

Hello so I've been trying to cheat maps(mostly classic RTS maps) I always made it work but I need help and guides on maps that are complicated. For example, BvO 4.0. In MPQ editor, the war3map.j is inside a script folder and when I put a JJ CP there(for example), I can't start the map, is there any step that I've been missing or extra steps I should do?

[MrEw0k]

Without adding the war3map.j as context, its hard to help you