How would you send a FormData object using amplifyjs?

[Henry H]

I've defined my amplify request without issue, but I cannot seem to figure out how to submit the request with a FormData object.  

Here's my definition:

amplify.request.define("submit-audio", "ajax", {

url : "/sopranos/submit_audio_to_api",

dataType : "json",

type : "POST"

});

Here's my submission:

var formData = new FormData();

formData.append('service', selected_service);

...

formData.append('db_coll', "only_recording");

amplify.request("submit-audio", formData, function(data) {

  console.log(data);

  return;

}

I get the following error:

1. Uncaught TypeError: Illegal invocation jquery.js?body=1:7500
1. addjquery.js?body=1:7500
2. buildParamsjquery.js?body=1:7552
3. jQuery.paramjquery.js?body=1:7520
4. jQuery.extend.ajaxjquery.js?body=1:8022
5. (anonymous function)amplify.js?body=1:578
6. amplify.requestamplify.js?body=1:486
7. audioUploadtest_harness.js?body=1:827
8. reader.onloadend

Any help would be appreciated!

Thanks,

Henry