Step 4: From the left Navigation panel click on Phone Numbers.
![phone_numbers](/assets/documentation/phone_numbers-fc10cfc57030ffaecb63b26fc8a46c720a7cc33218c0bb90072d2916879af958.jpg)
As you can see you do not have any numbers. To add a number, click + NEW NUMBER in the top right of the screen.
![no_number](/assets/documentation/no_number-a71069b7972968c28d2203c08ec8a97a3c6cc4ab97a542f178849ed67d03731f.jpg)
Next, click on the box under Choose Region to populate numbers from the region you want to generate a number from.
Once you choose a region, Save the number.
![create_number](/assets/documentation/createnumber-60b4de748a33e26b390ad889d7a6928b61bdbd1e1c13554af94c500c954edf1a.gif)
From the drop down box under Application, choose your current application.
The latest Version of your call flow will auto-generate from the application.
Below Actions, click Save, and a pop-up message will confirm that it has saved.
Call your number from any phone to hear your message. You should immediately hear “Hello World”!
![assign_number](/assets/documentation/assign_number-975880732c7eefa95c003250f53717bd352f011d7a49204bfecf641626721e08.gif)