https://community.appian.com/discussions/f/new-to-appian/18601/find-length-of-an-array-embedded-in-a-dictionaryWhat is the best way to determine the length of an array which is a member of a dictionary? The length(array) or count(array) functions are frequently used to determine the length of an array or list of values. But if the array is a member of a dictionaryen-USTelligent Community 12https://community.appian.com/thread/73232?ContentTypeID=1Fri, 10 Apr 2020 18:03:56 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:f5984a8f-b5d3-4d4d-833d-b10705671fdbarunramanathtm<p>Use fn!flatten before finding the length of an array within a dictionary</p><div style="clear:both;"></div>https://community.appian.com/thread/73228?ContentTypeID=1Fri, 10 Apr 2020 17:14:37 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:e02dfa79-fbe6-4e7d-8d8b-4fedaecd9966Danny Verb<p>The nested lists are not strongly typed, you can see this in the expression rule designer that local!nestedList.list is an Any Type (List of Text). To properly cast it I recommend using the cast function or using a!flatten() around you nested list. For example:</p> <p>length(a!flatten(local!nestedList.list))</p><div style="clear:both;"></div>