Sending multipart request to external systems via ThingWorx service

Hi,

I want to send a multipart REST request to external system (out side the ThingWorx application) using a custom service, to send an xml file. This is the code snippet for the service-

There are no logs getting updated for the service execution, nor the request reaches the external system.

 var now = Date.now();
 var url = /*URL*/;
 /*jshint multistr: true */
 var body = /*XMLBODY*/

var table = Resources["InfoTableFunctions"].CreateInfoTable();

//Add new fields to the InfoTable:
table.AddField({name: "test", baseType: "XML"});

// add data row
table.AddRow({
 test: body
});

var params = {
	proxyScheme: undefined /* STRING */, 
	ignoreSSLErrors: true /* BOOLEAN */,
	useNTLM: undefined /* BOOLEAN */,
	partsToSend: table /* INFOTABLE */,
	workstation: undefined /* STRING */,
	useProxy: undefined /* BOOLEAN */,
	repository: <repoName> /* STRING */,
	proxyHost: undefined /* STRING */,
	url: url /* STRING */,
	timeout: undefined /* NUMBER */,
	proxyPort: undefined /* INTEGER */,
	password: undefined /* STRING */,
	pathOnRepository: <path> /* STRING */,
	domain: undefined /* STRING */,
	username: undefined /* STRING */,
 headers:{'Content-Type': 'multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW',

 'X-XSRF-TOKEN':'TWX-XSRF-TOKEN-VALUE',
 }
};

// result: JSON
var result = Resources["ContentLoaderFunctions"].PostMultipart(params);
logger.info(" XMLRequestThing.SendXMLRequest(): Results From Calling Service - " + JSON.stringify(result));

Can some one please help with understanding what might be going wrong here, thank you!