File upload + Post

Hello
I upload file using upload lib, everything works ok but i want add also file description so i send it with file via post variable. In controller there is no any post variables. $this->input->post() is return empty array. Is there a security issue sending post + upload? Is there a way to send post variables with uploaded fille at the same time?

Sorry for my english

it's simple
https://stackoverflow.com/questions/3711...her-fields