my @valid_dateformats = qw(mm/dd/yy dd/mm/yy dd.mm.yy yyyy-mm-dd);
my @valid_numberformats = ('1,000.00', '1000.00', '1.000,00', '1000,00');
my @valid_dateformats = qw(mm/dd/yy dd/mm/yy dd.mm.yy yyyy-mm-dd);
my @valid_numberformats = ('1,000.00', '1000.00', '1.000,00', '1000,00');