Dynamic filters on Summary Tables

Hello All,

I have created a summary table using a fact and dimensions:

A = CALCULATETABLE(SUMMARIZE('Fact',DimItem[ItemNumber],DimDate[MonthNumber],"GS",SUM('Fact'[TotalTranslatedRevenue])),FILTER(DimScenario,DimScenario[ScenarioName]="Actual"))

Then Again Summarized another table to create standard deviation based on months(12)

B=  SUMMARIZE('A','A'[ItemNumber],"Revenue",SUM('A'[GS]),"StdDev",STDEV.P('A'[GS]),"Average",AVERAGE('A'[GS]))

Which is fine but now my problem is dynamic filtering.

I want "A" to be filtered dynamically when i select a company.(assuming that if A is filtered then B will automatically filtered)

My fact has CompanyKey joined with CompanyDimension

when i try to put CompanyName from CompanyDimension on the slicer visualization, the "A" summary table is not filtering.

if i get CompanyName also from CompanyDimension to "A" then Standard Deviations are getting wrong cus records are getting increasing.(which i dont want)

What is the correct way to achieve it..??

Any help..!!

Thanks in advance.