Same Period Last Year gives me the same as this year

[cafarrel]

I have a model with a date_dim table and I'm using the same period last year function:

MLI Units SPLY = calculate (sum(MLI_Fact[Units]), sameperiodlastyear(Date_Dim[Date]))

And it gives me the exact same number as the current year...

I've tried parrallelperiod and it's also not working... Any idea why? 

[Phil_Seamark]

HI @cafarrel

On the surface your syntax looks good.  When you plot your data in a table with dates and this measure, does your last year data definitely have a different value for the SUM?

[cafarrel · Accepted solution]

Thank you Phil for your reply. I have just discovered a solution (not really the problem) - replacing every possible date filters using the date dimension table instead of what was in my fact table solved the issue... rookie mistake!

Thank you!

[v-xjiin-msft]

Hi @cafarrel,

I'm glad to hear that you have resolved your issue. Please kindly mark your solution as answer. It'll benefit others with relevant issue. 

Thanks,
Xi Jin.