How can I recognize different players from the start

After I enter the user account and password, how can I set the locally stored variables as global variables?

Here are my variable default values.

And here is the set of variable data I want to load after entering the account and password.

The current execution method is as follows. Is there any way to successfully load it? I have tried for a long time, but it still doesn't work. I'm very frustrated!

/user check/

/set variable/

Thank you very much.

Another question:I've load the specific player's data from localstorage sucessfully,but I still can't set these variables to global variables.