How do I pass a dynamic variable to C3 Game when embedding it within a HTML webpage?

I'm trying to pass dynamic variable to C3 game that is embedded within a html webpage (built upon a PHP framework). However, I can't seem to access the LocalStorage variable when the game loads even after I have performed the following:

On Start of Layout - LocalStorage check if item exists

LocalStorage - On Item exists: Access LocalStorage.ItemValue

However, this doesn't seem to be working and I can't seem to retrieve the LocalStorage variable that I am trying to access.

Appreciate if anyone can guide me on this!

Thanks for sharing the threads! Managed to achieve what I want :)