Multiple MySql insert problem

[eluser]polish[/eluser]
Hello All CI users! I need your help! I am writing my blog and at now I have a problem with adding tags to my news! When I will choose one tag all is ok, but if I will choose more then I have an error:

Code:

Error Number: 1054
Unknown column 'Array' in 'field list'
INSERT INTO 'newstags' ('ttags_id', 'nnews_id') VALUES (Array, '27')

I am using the model function for adding tags to news:

Code:

function tagi_add($data) {
return $this->db->insert('newstags', $data);
}

I need something like:

Code:

INSERT INTO 'newstags' ('ttags_id', 'nnews_id') VALUES ('1', '27')
INSERT INTO 'newstags' ('ttags_id', 'nnews_id') VALUES ('2', '27')
INSERT INTO 'newstags' ('ttags_id', 'nnews_id') VALUES ('5', '27')

for adding more than one tag with only one (normal or active records) query!

Any ideas???