[iGetty]

pawn Код:

if(!strcmp(Nam,CarSystem[playerid][Owner],true))
            {
                format(str,sizeof(str),"* Hello %s, welcome back to your vehicle.",Nam);
                SendClientMessage(playerid,COLOR_YELLOW,str);
            }
            else
            {
                format(str,sizeof(str),"*BEEP *BEEP %s has entered your vehicle.",Nam);
                SendClientMessage(CarSystem[playerid][Owner],red,str);
            }

Try that.