Tableau's Include function in Power bi

Hi community I have this Tableau Code In which we use COUNTD and INCLUDE. I am unable to convert this function into Power bi.
I shall be very thankful for any help.
Thanks in Advance.

IF COUNTD([Area Upper]) > 1 THEN
IF ISNULL(MIN({include [Area Upper]:sum([Nominator])})) THEN NULL
ELSE
        IF ISNULL(MIN({include [Area Upper]:sum([Denominator])})) THEN MIN({include [Area Upper]:sum([Nominator])})
        ELSE MIN({include [Area Upper]:sum([Nominator])}/{include [Area Upper]:sum([Denominator])})
        END

END
ELSEIF COUNTD([Sub Zone]) = 1 THEN
IF ISNULL(MIN({include [Sub Zone]:sum([Nominator])})) THEN NULL
ELSE
        IF ISNULL(MIN({include [Sub Zone]:sum([Denominator])})) THEN MIN({include [Sub Zone]:sum([Nominator])})
        ELSE MIN({include [Sub Zone]:sum([Nominator])}/{include [Sub Zone]:sum([Denominator])})
        END

END
ELSEIF COUNTD([Zone]) = 1 THEN
IF ISNULL(MIN({include [Sub Zone]:sum([Nominator])})) THEN NULL
ELSE
        IF ISNULL(MIN({include [Sub Zone]:sum([Denominator])})) THEN MIN({include [Sub Zone]:sum([Nominator])})
        ELSE MIN({include [Sub Zone]:sum([Nominator])}/{include [Sub Zone]:sum([Denominator])})
        END
END
ELSEIF COUNTD([Area Upper (group)]) = 1 THEN
IF ISNULL(MIN({include [Zone]:sum([Nominator])})) THEN NULL
ELSE
        IF ISNULL(MIN({include [Zone]:sum([Denominator])})) THEN MIN({include [Zone]:sum([Nominator])})
        ELSE MIN({include [Zone]:sum([Nominator])}/{include [Zone]:sum([Denominator])})
        END
//MIN({include [Zone]:sum([Nominator])}/{include [Zone]:sum([Denominator])})
END
END