Get Varience on Matrix

Hi,

The below code does not seem to work, I can bring in the matrix details fine, but when I am trying to say give me last years value (Same PeriodLastyear) based on the filter it does not work.

Any ideas...

Thanks

C

=CALCULATE (    DISTINCTCOUNT (AdDetails[company]),    CALCULATETABLE (        SUMMARIZE (AdDetails,Table2[CompanyGrouping]),        ALL ( titles ),        USERELATIONSHIP (AdDetails[ttlname],'FilterTitle'[filterttlname]),SAMEPERIODLASTYEAR('Calendar'[Date]))