humour me please

I know this is really simple but I have two menus.
Menu1 has an option that offers menu2.
Menu2 has an option that offers menu1.
Both menus take in a value from functions (these display the choices).
This value is then used in a switch statement.

Any suggestions on how to get this working nicely? The way I'm doing it at the moment does not give satisfactory results. I want to keep the parts that I have given details for.