How to Configure Card Visual for selected day Value and Line Chart for selected month's Daily Values

pls try to set up the visual interactions between filter and visual.

https://learn.microsoft.com/en-us/power-bi/create-reports/service-reports-visual-interactions?tabs=powerbi-desktop?wt.mc_id=DP-MVP-5004616

Hi puru85 ,

Thank you for ryan_mayu answer , and I have other suggestions for you:
Below is my table:

You can create two measure:

Measure = SELECTEDVALUE('Table'[Day])

Measure 2 = 
   VAR _month = SELECTEDVALUE('Table'[Month])
   RETURN
     CALCULATE(MAX('Table'[Day]),FILTER('Table','Table'[Month] = _month))

and click the visual interaction:

The final output is shown in the following figure:

Best Regards,

Xianda Tang

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