Hello,
I am creating a simple for-each loop where I'm looping through a collection variable that will store task IDs and storing the result in a list item id variable. I am then using a query list to query the workflow Task list where the ID is equal to the list item id variable. When I configure my for-each action, I can see my collection variable in the drop down list under "Target collection" along with all of my variables in "Store result in". However, whenever I save this action, I am still receiving a warning that the Target collection cannot be blank - even though it's available in my target collection drop down menu.