Moving 12 Month Sum

[ljone153]

Hello, I have looked at multiple 12 month moving sum posts, but still havent been able to solve my problem. My Problem is that whenever I put in a 12 month moving sum formula, I get just the same number for all dates as seen below (far right). The following picture also shows one of my 12 month moving sums that I tried.

Here is the other formula I tried.

Here is the table that I am trying to do the 12 month moving sum on (it is a calculated table):

And here is my dim Date table for good measure (only use the MonthYear Column).

If anyone can help me make sense of where I am going wrong, that would be a great help. If you need anymore information, feel free to ask. Thank you!

[Seward12533]

When you see repeated values in all the rows its a dead givaway that the filter context your intending is not being applied. 

In this case your calculating based on results form the Policy Count table but that is not used in defining your table so the PowerBI is not applying the filter context implied by your visual.  While your measure is assigned a home table and shows there in the Fields Pane it not associated with any particular table in the data model.   Working with multiple fact tables is one of the most challenging things for people getting started in PowerBI. 

See this post where I go into how to ensure your filter context if correctly applied.  It include a basic example in a linked PowerBI worksheet that demonstrates the common approaches.  In your case setting one of your relationships to have crossfilter direction go both ways.