count unique (frequency formula)

Hi all

Having some issues with sum(if(frequency formula.....

in cell I95 (red highlight), i am trying to calculate UNIQUE instances of where an item is sold.

my formula is as follows:

{=SUM(IF(FREQUENCY(IF('Q4 CRM @Y'!$K:$K='2014PERF'!$Z95,IF('Q4 CRM @Y'!$A:$A=$Y95,'Q4 CRM @Y'!$I:$I)),'Q4 CRM @Y'!$I:$I)>0,1))}

it is showing 0....not sure why ....

basically, what I am trying to do is as follows:

FIND UNIQUE "ship-to # (column I in the "Q4 CRM @Y" tab) for specified CITY and (column K in the "Q4 CRM @Y" tab) and by DEALER (column A in the "Q4 CRM @Y" tab, marked as a 1)

in the 2014PERF sheet, cell Y95 = 1 and Z95 = City...so basically, count how many unique times there is a ship-to for QUEBEC that is dealer

it should be around 644 or so.....but getting 0

any help, pls and thank you.