example 2

example2.js

	twitter.userTimeline(function(data) {
            var returnedParams = JSON.parse(data.text);
            Ti.API.info('returnedParams: '+returnedParams);
	
	function success(data)
		{
		    Ti.API.info('Response text: '+JSON.parse(data.text));
		 }

	function failure(data)
		{
		    Ti.API.info('Something bad happened: '+ JSON.parse(data.text));
		};

	
	});
}

I think you're code needs to be more like:

function success(data)
{
    Ti.API.info('Response text: '+JSON.parse(data.text));
}

function failure(data)
{
    Ti.API.info('Something bad happened: '+ JSON.parse(data.text));
}

twitter.userTimeline("bytespider", null, success, failure);