I cannot not go to second window in appcelerator - window

Question

I am new in Titanium Studio. I am trying to do that when user clicks the any button in window1, it goes the second window. I mean I cannot connect to button1 and button2 in order to pass through the second window.
Here is the my sample code. Can anyone help me please?
Titanium.UI.setBackgroundColor('#000');
var win1 = Ti.UI.createWindow({
layout : 'vertical',
title : 'Welcome to BMI'
});
var button1 = Ti.UI.createButton(
{
title:'Standart',
top : 300,
height: 20,
width: 100
});
button1.addEventListener('click', function(e)
{
win1.close();
win2.open();
});
var button2 = Ti.UI.createButton(
{
title:'Metric',
top : 350,
height: 20,
width: 100
});
button2.addEventListener('click', function(e)
{
win1.close();
win2.open();
});
win1.add(button1);
win1.add(button2);
win1.open();
var win2 = Ti.UI.createWindow({
backgroundColor: 'white',
layout: 'vertical',
title: 'BMI'
});
var label1 = Ti.UI.createLabel({
color: '#900',
font: { fontSize:48 },
shadowColor: '#aaa',
shadowOffset: {x:5, y:5},
text: 'Body Mass Index',
textAlign: Ti.UI.TEXT_ALIGNMENT_CENTER,
top: 30,
width: Ti.UI.SIZE, height: Ti.UI.SIZE
});
var label2 = Ti.UI.createLabel({
color:'blue',
text: 'Welcome to BMI',
textAlign: Ti.UI.TEXT_ALIGNMENT_LEFT,
top: 30,
width: 300, height: 200
});
win2.add(label1);
win2.add(label2);

Answer 1

I think you should not face problem to execute this code but i think you need to do some modification in your code.
Titanium.UI.setBackgroundColor('#000');
function openNewWin(){
var win2 = Ti.UI.createWindow({
backgroundColor: 'white',
layout: 'vertical',
title: 'BMI'
});
var label1 = Ti.UI.createLabel({
color: '#900',
font: { fontSize:48 },
shadowColor: '#aaa',
shadowOffset: {x:5, y:5},
text: 'Body Mass Index',
textAlign: Ti.UI.TEXT_ALIGNMENT_CENTER,
top: 30,
width: Ti.UI.SIZE, height: Ti.UI.SIZE
});
var label2 = Ti.UI.createLabel({
color:'blue',
text: 'Welcome to BMI',
textAlign: Ti.UI.TEXT_ALIGNMENT_LEFT,
top: 30,
width: 300, height: 200
});
win2.add(label1);
win2.add(label2);
win2.open({
modal : true
});
}
var win1 = Ti.UI.createWindow({
layout : 'vertical',
title : 'Welcome to BMI'
});
var button1 = Ti.UI.createButton(
{
title:'Standart',
top : 300,
height: 20,
width: 100
});
button1.addEventListener('click', function(e)
{
win1.close();
openNewWin();
});
var button2 = Ti.UI.createButton(
{
title:'Metric',
top : 350,
height: 20,
width: 100
});
button2.addEventListener('click', function(e)
{
win1.close();
openNewWin();
});
win1.add(button1);
win1.add(button2);
win1.open({
modal : true
});