dbd::csv with col_names but insert / delete / update fail

[aclhkaclhk]

I have a csv file. I defined the column names inside the perl script
but "sql insert" does not work. If the csv has column names, the
script (without col names defined) works.

sql select works on both csv with or without column names.

***** not working ****
/root/csv/db/b
1,peter
2,wilson

insert.pl
   use DBI;
    $dbh = DBI->connect("DBI:CSV:f_dir=/root/csv/
db;csv_sep_char=",";csv_quote_char=;csv_eol=\n")
        or die "Cannot connect: " . $DBI::errstr;
$dbh->{'csv_tables'}->{'passwd'} = {'col_names' => ["id","passwd"]};
$dbh->do("insert into b (id, passwd) values (10,3333)");

[EMAIL PROTECTED] csv]# perl insert.pl

Execution ERROR: No such column 'B.ID' called from insert.pl at 6.

***** working without error*******
id,passwd
1,peter
2,wilson

insert.pl
    use DBI;
    $dbh = DBI->connect("DBI:CSV:f_dir=/root/csv/
db;csv_sep_char=",";csv_quote_char=;csv_eol=\n")
        or die "Cannot connect: " . $DBI::errstr;
$dbh->do("insert into b (id, passwd) values (10,3333)");