[horde] Add to download header

[Mike Poznecki]

Hi, how can I added a new tag to the header on a download file. (The attachment)
I have tried to add a new tag in services/download/index.phpI added it like this:
$browser->downloadHeaders(   isset($res['name']) ? $res['name'] : $var->filename,   isset($res['type']) ? $res['type'] : null,
   isset($res['newTag']) ? $res['newTag'] : "newTag",
   false,   $res['size']);

So I tried to add 'newTag'.  It does not error, but two things happen.  1) the tag is not in the header. 2) the file no long tried to download, but instead just spits out in the browser.
Can someone help me do this?