Custom ribbon checkboxes do not retain values when file is closed.

[ericsastud]

I have a group of checkboxes on a custom ribbon that I use to hide certain worksheets. When the file is closed and reopened, the checkboxes reset to their default value of false. I would like the checkboxes to retain the values they had when I closed the file.

How do I change the values of the checkboxes using vba? Thanks in advance!