Uploadify v3.1 passing POST Data
<p>Iam getting Crazy with JQuery Uploadify V3.1.</p>

<pre><code>// setup fileuploader
$("#file_upload").uploadify({
    'swf': 'flash/uploadify.swf',
    'uploader' : 'upload/do-upload',
    'debug' : false,
    'buttonText': 'Files auswählen',
    'multi': true,
    'method': 'POST',
    'auto': false,
    'width': 250,
    'queueSizeLimit' : 10,
    'fileSizeLimit' : '100MB',
    'cancelImg': 'img/uploadify-cancel.png',
    'removeCompleted' : true,
    'onUploadSuccess' : function(file, data, response) {
        $('#message').append(data);
    },
    'onUploadError' : function() {
        $('#message').html('&lt;h2&gt;Fehler beim Upload&lt;/h2&gt;');
    }
});
</code></pre>

<p>To start Download onClick </p>

<pre><code>// handle the event stuff
$("#event_start_upload").on({
    click: function(){
        var key = $('#key').val();

        if (key.length &lt; KeyLength) {
            $('#form-encryption-control').addClass('error');
            return;
        } else {
            $('#form-encryption-control').removeClass('error');
        }
        // some space for new download links
        $('#message').empty();
        $('#file_upload').uploadify('upload','*')
    }
});
</code></pre>

<p>My Problem is: I have to pass addtional params to the serverSide, in Uploadify V2 there was an Method uploadifySettings to pass "scriptData" , but not in V3? Someone knows how this works?</p>

<p>If someone else needs the clue:</p>

<pre><code>'onUploadStart' : function(file) {
            var key = $('#key').val();
            $("#file_upload").uploadify('settings', 'formData', {'key' : key});
        },
</code></pre>
