Function not firing

Hi there – I can’t seem to get this function to fire and pre populate the address field on my contact form with anything at all… any ideas?

add_filter( 'cf7_2_post_filter_cf7_field_value', 
'field_default_value',10,5);

function field_default_value($value, $cf7_id, $field, $cf7form_key, 
$form_terms){
    if('your-address' == $field){
       global $current_user;
       //get your user's address
       $value='test';  
   }
  return $value;
}

It’s loaded on the page with

[cf7-form cf7key="untitled-2"]

And the field on the form is:

<div class="input-area"> Address: *[text* your-address class:input-box] 
</div>

Thanks!