Interactive visuals should filter out zero values

Hello

I am needing help in filtering out zero values in an interactive visual.     If I select "purchased livestock" in the left visual, I only want the customers related to purchased livestock to show up in the right visual.

Within the "right" visual, I have attempted to filter out (at the visual level) for any value not 0, for the measure Amount.   The desired result for the "right sided" visual is all vendors with an Amount <>0.

Within hte left sided visual - I have 4 row levels within the matrix visual.  I am assuming whatever is done, will require these data elements?

I have also attempted to adjust the measure if zero, then blank.  See below.

Amount1 =
VAR calcAmount1 =
    SUMX (
        COASetup,
        [Amount (dbcr balance)] * COASetup[NormalBalance] * COASetup[Report Sign]
    )
RETURN
    IF ( calcAmount1 = 0, BLANK (), calcAmount1 )

 Please advise - surely there is a simple fix.   I am disappointed in the visual filter not working - or am I missing something?

thanks