[jQuery] ajaxfileupload and additional data

Hello all,

I'm running this plug in http://www.phpletter.com/Our-Projects/AjaxFileUpload/
and I need to send along additional post data can anyone help ?

here is my current code

[code]
var obj = {};
    obj.id = id;
    obj.func = file_uploaded;
    obj.type = "file";
        obj.pdata ={}
        if (loc == "bigart") {
        obj.pdata.random='bigart';
                obj.pdata.func='upload_bigart';
    } else {
        obj.pdata.random=random;
                obj.pdata.func='upload_image';
    }

  $.ajaxFileUpload({
            url:prefix,
            secureuri: false,
            fileElementId: 'fileToUpload' + obj.id,
            data: obj.pdata,
            dataType: 'json',
            error: function(data) {
                if (data.status == 302) {
                    top.location.href = data.getResponseHeader
('Location');
                } else {
                    display_messages({
                        messages: {
                            error: "invalid json response please try
again file error:" + data.error
                        }
                    });
                }
            },
            success: function(data) {
                display_messages(data.messages);
                if (data.messages && data.messages.error !==
undefined) {
                    $("#form" + argObject.id).remove();
                    add_form_field();
                } else {
                    obj.func(data, obj.id);
                }
            }
        });
[/code]

thanks
Mean Mike