Update query increment field plus 1 codeigniter

I got a problem when trying to increment by 1 on given field in my db. I tried with and without active records. My functions look like this (in my model) ``` function _set_reads($id){ $this->db->set('reads', 'reads+1', FALSE) $this->db->where('id', $id); $this->db->update('article'); } ``` and ``` function _set_reads($id){ $sql = 'update article set reads=reads+1 where id=?'; $this->db->query($sql, array($id)); } ``` I get the same error in both cases and it's the following error message: ``` Error Number: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'reads+1 WHERE `id` = '15'' at line 1 UPDATE `article` SET `reads` = reads+1 WHERE `id` = '15' ``` I am using the latest version of MAMP