setUsername and setMetadata Test

app.js

var win = Ti.UI.createWindow({
	backgroundColor : '#fff'
});

// Create a Button.
var ACATest = Ti.UI.createButton({
	title : 'ACATest',
	color : "red",
	height : Ti.UI.SIZE,
	width : Ti.UI.SIZE,

});

var acs = require("com.appcelerator.aca");
acs.setUsername('motiur rahman');

// Listen for click events.
ACATest.addEventListener('click', function() {

	try {
		var err = new Error('FATAL ERROR: Value cannot be null or undefined!');
		if (value === null || value === undefined)
			throw err;
	} catch (err) {
		acs.logHandledException(err);
		acs.setMetadata('email', 'motiur@gmil.com');
	}

});

win.add(ACATest);

win.open();

error on this link -> aca.setMetadata('motiur', 'might be an issue');
it shoulbe acs.setMetadata('motiur', 'might be an issue');