Please be patient, as this is going to be hard to describe. I have a straight table that accurately produces the number of rows for the past 13 months as defined by the month and year selected.
I believe my problem is in what I have to do to get the correct number of rows in the table. Here is the expression for "Reporting Date" as an example:
=If($(vRetentionReportingDateDiff) < 0 or $(vRetentionDaysFromStart) > 395, Null(),Date(Only({<RetentionNumerator = {1}, TermExclude = {0}, ReportingYear=, ReportingMonth=, Reporting_M={">=$(=max(Reporting_M)-13)"}>} ReportingDate)))
Translated, the first variable, $(vRetentionReportingDateDiff), is used to reject any rows from future months than the month selected. The second variable, $(vRetentionDaysFromStart), rejects other rows for a condition defined by the user. If either of these conditions are met, the cell will bet set to NULL and will be suppressed from the table. Unfortunately, I am unable to set these variables in the script because they are determined by the Year and Month selections.
Now I need to translate this into a line chart with a dimension of Month-Year, which I have been unable to do. I have attached a minimized copy of my dashboard to remove sensitive information, but there should be enough there to understand what I need. Thanks in advance for your time.