How to send form data in httpsync - node.js?

I am using httpSync module to fetch data from the server.

I have sample as below

var httpsync = require('httpsync');
var req = httpsync.request({
             url: url,
             method: "POST"
});

Note:

   I am using httpSync because i want the request to behave synchronous.

   I cannot add original code

How can i send the form-data to the server using httpSync

I had tried the following but it is not working

  var req = httpsync.request({
             url: url,
             method: "POST"
             form:{a:1,b:1}
});

Any suggestion will be grateful