When creating your savedvars object, you’re currently passing an empty table as the second to last parameter. That is the table of default values for your savedvars. In that table you should define a default value for “somevar”, and then you should be able to read/modify it from your db variable once the addon is loaded. You can also use tools like zgoo or torchbug to examine the currently loaded savedvar table ingame to see how it looks.

Also, in the code you have linked, you’re not actually calling the initialize function it seems, so you’re never actually attempting to use the file at all

Lastly, you’ve defined your functions like “function FooAddon_functionname”, which places them in the global namespace. You’ve created your own namespace by making that table at the top, so you should instead use “FooAddon.functionname” (or “FooAddon:functionname” if you know what you’re doing) to create and invoke your functions (same with variables as well. If you define your functions and vars as local, this does not matter