[LarzI]

I'll give you an example:

pawn Код:

new PlayerName[24]; 
//As you can see, this line is all by itself, not inside any braces ( { and } )

public OnPlayerConnect(playerid)
{
  new PlayerName[24];
  /*This line is "making" the warning. Since we already have 
  defined "PlayerName" global (as I said, not inside any braces)
  and we're trying to define it again inside a function. This is not
  necesarry, since when you define a variable "global" all callbacks 
  and functions will "use" that variable, so you don't have to make a new one.*/
  return true;
}

So to fix, delete the PlayerName vars (new PlayerName[MAX_PLAYER_NAME]; or w/e you have defined it as) which is inside { and } and leave the global one ( whichi isn't inside any braces), since that's the one you "need"