thank you for your reply.
I created a parameter to swap between 6 months view and a range and it is doing what I want. Parameter has two options:
1) 6 month
2) Select a range
The only thing that is missing is that range filter is always shown on the dashboard, even when 6 month option is selected which can be confusing for the user. Is there a way how I can make range filter to be shown only when Select a range option is selected?
Thank you very much!