YAHOO.util.Connect.asyncRequest: send json string via post

Trabla: YAHOO.util.Connect.asyncRequest: send json string via post request

Solving:

var sURL =  'http://myapi.com/trololo';

var postBody = [{"id":"123"},{"id":"234"}];

var callback = alert('Hooray!!! Response received!');

//Clear default headers
YAHOO.util.Connect.setDefaultXhrHeader(false);
YAHOO.util.Connect.setDefaultPostHeader(false);

YAHOO.util.Connect.initHeader('Content-Type', 'application/json' ,true );
YAHOO.util.Connect.asyncRequest('POST', sURL, callback , JSON.stringify( postBody ) ); 

Official documents:
http://yui.github.io/yui2/docs/yui_2.5.1/docs/YAHOO.util.Connect.html