Username on top of the screen after a login session

I am creating an Inventor app, first thing is the Login, I did it now I want that Username to appear on the following screen, Do you guys have any idea please? it will be a life saving.

First read this: Virtual Screens

If you have to use a second/third real screen, then save the username to a tinydb, drag in a tinydb to your second screen, and return the username tag to your label.

Use different screens wisely

If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a while...      
The recommended method of switching screens in App Inventor
(Thanks Taifun)
Also see demo: multiscreen.aia

Also see Nested Screens

Simplest way

When they log in with their 'name' provide code to set the Title to their name?


Yes I though about that, but I don't know the people that will log in, this is a school project.

Yes I am using different screens, til now I have used 4 screens, and in my forth one where I'll have to display the username.

Yes This is what I want to do, how can I link the username bar, to set the title on top of the screen if you know how please let me know

To a specific answer, you need to show the Blocks of your log in. What is needed depends on your log in code.

You link the username to the TitleBar when the user logs in