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Usually this should be empty, null or empty string. But after my migration  1. find the value, with loops it can be something like "items('Apply_to_each_2')?['Value']" 2. init variable and set it as Expression "string(items('Apply_to_each_2')?['Value'])" 3. test is vs "string('[]')"

 You need to use "empty" expression on the Lookup Value and Condition equals to expression "true" (of false or not equal ect.)

3 simple steps - Recurrence,  RSS, Apply to each with some Composes 1 - Recurrence Just state the recurrence of querying the feed 2 - Use the RSS connector, which actually just get the JSON array of the items :) (at least in my case) 3 - Apply to each with some Composes What can't be seen in the image is the formula, for each composite the formula is the same appart from the json field value, here "publishDate", place that in the "Expression" side of the "add dynamic content" and click "OK" items('Apply to each')?['publishDate'] which apparently can be also be done with item()?['User ID 1'] And create the SP item P.S. In order have distinct value items I set the SP list Title columns to force distinct values, it then shows an error for each attempt to create duplicate value