Rest Api for Flash Talking - XML through POST

Hey Guys!

I need to push XML request through POST for flashtalking api.

Code below:

httprequest.addHeader('Authorization', 'Basic ' + DOMO.b64EncodeUnicode(metadata.account.username + ':' + metadata.account.password));
var res = httprequest.get('https://request.flashtalking.net/authenticate/xxxxxxxxappkey');
//token extraction
var token = res.substring(92, 124);
DOMO.log('token: ' + token);

httprequest.addHeader('Authorization', 'Basic ' + DOMO.b64EncodeUnicode('appkey' + '||' + 'devkey' + ':' + token));

var xml = '<?xml version="1.0"?>'+
'<request>' +
'  <name>testapiclient23</name>' +
'</request>';

var post = httprequest.post('https://request.flashtalking.net/client',xml);

DOMO.log(' post : ' + post);

When I use:

var post = httprequest.post('https://request.flashtalking.net/client',xml);

Console gives me follwing error:

post : method POST must have a request body.

When I modify it to:

var post = httprequest.post('https://request.flashtalking.net/client',{body:xml});

Api response is:

<?xml version="1.0"?>
<response><request>client</request><function>create</function><error>args not complete:name</error><token>90f6e2a9d6f42c1d5ee44dc249c212f7</token><httpstatus>400</httpstatus><message>bad request.</message></response>

Error 400 - Bad request.

I am pretty sure that Flash Talki api doesn't recognize my XML request, not sure why though.

Any help will be appreciated.