In a Graphic table compare sumof value for the current month and previous month

[Touix]

Hello Everybody,

I join a qlikview document.

I have a problematic that seems very very very simple, but since 2 days i am totally blocked.

I have sum of cancellation and subscription by month.

I want to compare the result of the sum with the previous month.

EFF :
load *, date#(DATE_CHAR,'DD/MM/YYYY') as DATE  ;
LOAD * INLINE [ 
DATE_CHAR,  TOP_CANCEL, TOP_SUBSCRIPTION , ID_CLIENT
'01/01/2022' , 0 ,1 , 1
'01/01/2022' , 1 ,1 , 2
'01/01/2022' , 1 ,0 , 3
'01/02/2022' , 0 ,1 , 4
'01/02/2022' , 1 ,1 , 5
'01/02/2022' , 1 ,0 , 6
'01/02/2022' , 1 ,1 , 7
'01/12/2022' , 1 ,0 , 8
'01/01/2023' , 1 ,0 , 9
'01/01/2023' , 0 ,1 , 9
'01/02/2023' , 1 ,0 , 10
'01/11/2023' , 1 ,0 , 11
'01/11/2023' , 1 ,0 , 12
'01/11/2023' , 1 ,0 , 13
'01/12/2023' , 1 ,0 , 21
'01/12/2023' , 1 ,0 , 22
'01/12/2023' , 1 ,0 , 23
'01/12/2023' , 0 ,1 , 24
 ]; 

I have create a set analysis in a graphic table with DATE as dimension like this : 

sum({<DATE={"$(=addmonths( (DATE),-1))"} >} TOP_CANCEL)

But results diplay are 0 ...

Can you tell me what is wrong in my logic ?

Thank you