Static tooltip value

Hi Copycat ,

According to your description, here's my solution.

Measure =
VAR _MIN =
    MINX (
        FILTER ( ALL ( 'Table' ), 'Table'[Class] = MAX ( 'Table'[Class] ) ),
        'Table'[Date]
    )
RETURN
    MAXX ( FILTER ( ALL ( 'Table' ), 'Table'[Date] = _MIN ), 'Table'[Score] )

Then create a new page, in the page formatting pane, turn on "Allow use as tooltip", and select custom cavans, then set the suitable height and width.

Then create a table visual in the page and put the measure in the visual.

In the original page, turn on the Tooltips option and select Report page, select Page2.

Get the correct result:

I attach my sample below for your reference.

Best Regards,
Community Support Team _ kalyj

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