DAX filter a Measure by an other Measure

Question

My current measure (that is depending on other measures) looks like this and does not work:

GNum Count Class 1 = 
    CALCULATE ( [Count Values Minus 0]
            , FILTER ( TableClass_Details, 
                        [GNum x AVG] = 1
                )
            )

All the following measures work fine.

I want to count all the accounts with the classification Average = 1.

GNum x AVG = ([Class Account Income] + [Class Account Size]) / 2

Class Account Income = SWITCH(TRUE(),
    SUMX(TableClass_Details, TableClass_Details[Income]) >= 10000,1,
    SUMX(TableClass_Details, TableClass_Details[Income]) >= 5000
    && SUMX(TableClass_Details, TableClass_Details[Income]) <= 9999,2,
    3)

My count values measure looks like this:

Count Values Minus 0 = 
CALCULATE(
    COUNTROWS(TableClass_Details)
    ,TableClass_Details[Income] > 0
    )

So I am using measures inside other measures. "GNum x AVG" works just fine but I am not able to count how many accounts have an average of 1 in my measure "GNum Count Class 1".
Please help me figure it out.
Here you can see the goal and some data:

Account,    Income, Size
A128,   100,    5000
A129,   7000,   400
A130,   20000,  15000
A131,   8020,   7000
A132,   15000,  10000
A133,   600,    15000
A134,   8000,   400
A135,   150,    200

Answer 1

you can try this

Measure =
SUMX ( VALUES ( TableClass_Details[Account] ), IF ( [GNum x AVG] = 2, 1 ) )