Different screen layout based on screen size

[Max Bedacht]

Within screen manager I am trying to create a screen layout which changes based on the users screen size. When the screen is small I will use a tabbed panel to break up the items into multiple tabs while on a full sized tablet everything will appear on the same screen.

The underlying Class which processes the data should be the same, just the screen definition in the KV file would be different.

Is there any way that part of the KV file can be loaded with this particular screen definition after the app is initiated? I have tried using Builder.load but the added KV statements are not incorporated into the application.

Should I be thinking of another way to do this?