Specific prompt by query/tab

Hi,

I have a workbook with 2 ready for input queries on 2 tabs. Both queries run on the same aggregation level.

First Tab has one query with  2 mandatory variables            country (Multi) year(single)

Second Tab has one query with 2 mandatory variables       country (Single) year(single) & store(All)

so the second query is actually a detailed view (store) of the first but then sliced to 1 country .

When opening the workbook I actually do not know for what county I want to detail out by store.

So including it in the prompt as a mandatory variable does not help.

Best case there would be a prompt  that comes up when moving to the second query/tab only asking for a single selekt for country.

I have no idea how to do this, do you?

Best Regards,

Georg