Aggr Function With Calculation

[QS_User_2019]

Hello,

I would like to create a table and Pie Chat and identify the "Customer" type based on below logic but not sure why it can not show properly. 

=Aggr(if([Special Customer]=1 and um(Gross Profit)>=0, 'Special Customer Profitable',

if([Special Customer]=1 and sum(Gross Profit)<0, 'Special Customer Loss Making',

if([Special Customer]=0 and sum(Gross Profit)>=0, 'Profitable',

if([Special Customer]=0 and sum(Gross Profit)<0, 'Non-Special Customer Loss Making',null())))), [Customer])

I apply above formula on the table, not sure why there are many null in the tbla.

Table

Year	Month	Customer	Rev	Cos	Gross Profit	Quantity	Special Customer	My Aggr Function
2019	Oct	AAA	500	400	100	100	0
2019	Oct	BBB	300	600	-300	200	1
2019	Nov	AAA	600	300	300	500	0

For the Pie Chat, I apply the same formula as the dimension. For the measure, I use sum(Quantity). But it can not show correctly as well.

Anyone can help me on this issue.

[Anil_Babu_Samineni]

By seeing the data it is not full-filling the condition of 4 expressions. Please validate individual and then try?