Yea, there are a few reasons. I posted a test case up there. Here is real code:

        push @$month, {
            DATES            =>    $dates,
            CITY            =>    $city,
            STATE            =>    $state,
            TITLE            =>    $title,
            LOCATION        =>    $location,
        }
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The $month variable contains the name of the month. The data needs to be put in the appropriate array based on what the month variable contains. I could just make a giant if/then loop and do it, but I was looking for something shorter...