spaces in MySQL columns

[eluser]exodus7[/eluser]
I'm having trouble inserting a record using the Active Record Class when the column name has a space in it. I've tried using brackets & '' but its not working as expected:

example:

Code:

$data = array('Constituent Name' => $this->input->post('fullName', TRUE))

$this->db->insert('mis', $data);

This is actually the first time I've seen spaces in a table's filed name I don't know how to fix this...

Any help would be greatly appreciated. Thanks!