How can I store the most recent date in a list as the result of a function in M Query?

[Anonymous]

I need to store the value in the StartDate column for the most recent file in a report for use elsewhere in my Power Query. I can filter to that value all day long, but I would like to store it so I can reference the value as a variable. How can I do this?

As an example, I need to store CSV2's StartDate so I can later check to see if a file's StartDate matches the most recent export's start date.

File	StartDate	FileIndex
CSV2	12/12/19	1
CSV1	12/11/19	2

[Icey]

Hi @Anonymous ,

Is this what you want?

Attach my PBIX file.

Best Regards,

Icey

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[parry2k]

@Anonymous you cannot write back from power query until you use R script or so.