How to pass response from an HTML Select form to MTURK output

I am trying to use a select form in an MTURK task. The form appears correctly, but the responses used in the form do not appear in the output CSV I get after running a batch of HITS. Here is my dropdown menu:

<select name="boxName" required>
        "<option value="">Select Box Location (1)</option>"
        "<option value="">Diamond Lakes</option>"
        "<option value="">Henry Brigham</option>"
        "<option value="">Municipal Building</option>"
        "<option value="">Southside</option>"
        "<option value="">Warren Rd</option>"
        "<option value="">Warren Rd</option>"
        "<option value="">Other</option>"
            </select>

How do I get a workers response passed on to the output csv?