Cubeset with multiple Period range?

Hey All! need help with creating a Cubeset formula! I've market data at region level for multiple period & brand! I want to know the rank of particular Brand in each region on Specific Period. Formula is working for a particular period but not working on a range! How can I use a range/dynamic period in cubeset.

=CUBESET(
    "ThisWorkbookDataModel",
    "EXISTS([Brandmaster].[Brand].children, 
    ([State_Master].[State].[Maharashtra], 
    {[Calendar].[Month].[Oct-2024]:[Calendar].[Month].[Dec-2024]}))",
    "Set",
    2,
    "{([Measures].[S_Value],[State_Master].[State].[Maharashtra],{[Calendar].[Month].[Oct-2024]})}"
)

This is working for particular month but when I want to get data for 3 month like Oct-Dec

=CUBESET(
    "ThisWorkbookDataModel",
    "EXISTS([Brandmaster].[Brand].children, 
    ([State_Master].[State].[Maharashtra], 
    {[Calendar].[Month].[Oct-2024]:[Calendar].[Month].[Dec-2024]}))",
    "Set",
    2,
    "{([Measures].[S_Value],[State_Master].[State].[Maharashtra],{[Calendar].[Month].[Oct-2024]:[Calendar].[Month].[dec-2024]})}"
)

I'm getting error on this. Range is working on set expression but while using same in Sort By (Highlighted Part), I'm getting the error.

One way around is passing Each Month separately not tried that but I want it to be dynamic using timeline & using Min/Max function to define the range, it could be 2month or 12 month.

Pls help me with this.

Thanks