[Weirdosport]

pawn Code:

#define AdMsg 1 //At the top

//This doesn't work:
public FoundBug(playerid) //Timer
{
    switch(AdMsg)
    {
        case 1: //msg
        case 2: //msg
        case 3: //msg
    }
}

Looking at your code though, you're always going to get 1. You can't change a define (Well you can using #undef but that's silly). You'd be better off having AdMsg as a variable, that way you can easily change it to another value to alternate between messages.