Is this an issues with the local session manager - variables persist after Session Storage Manager removal?

Hi

I want to add a local session to the content page which I have done.

On click of an icon I want to set the session to a specific value.

But I do not understand why when choosing to set the session it comes up with one of my global session variable names and nothing else?

I have no local session storage on the layout page or on the content page.

I create the session storage and assigned the variable.

session 11538×1584 283 KB

I then try and set the session value but why am I getting only one of my global variables listed?

session 21292×1398 295 KB

This is one of 5 global variables I have in my app, why is appearing here?
What am I doing wrong here?