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Helper II
Helper II

Using a Flow to write a numeric value back to a list column

I have a Flow that runs once every 24 hours and parses every item in a SharePoint list that meets some criteria, calculates time elapsed (in days) between the present day and the Last Modified field on each one, then executes a number of automatic emails based on the results.


This part has been working fine for years, but someone requested the one thing I've never done using a Flow: write a value back to the list. They figured since I am already calculating the number of whole days elapsed since the list item was modified, why can't I insert a command to write that value to a new column in the same list so someone can view it at a glance.


Well, as I noted I've never written back to a list, so I created a new, unused column in the list called "Idle Days." I then used an Apply to Each, taking the output from the whole days elapsed calculation and writing it to the column.


Doing so I get the error below. Am I using the wrong approach entirely? It's just an integer, and I want to write it into a blank column, but am not sure how else to approach.






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