Dax formula

[Laman]

Hello ! i wrote a measure to identify if the customer has returned to the market sequently month. Here is my code:

VAR NumberOfMonths = 5

VAR LastNMonths =
DATESINPERIOD(
'Date'[Date],
MAX('Date'[Date]),
-NumberOfMonths,
MONTH
)

VAR SelectedCustomersIDs =
SUMMARIZE(
FILTER(
'_Measures - Sales Return',
'_Measures - Sales Return'[SalesReturnDateID] IN LastNMonths &&
RELATED ('Order Reason'[Order Reason Group]) = "Müştəridən gələn silinmə"
),
'_Measures - Sales Return'[PARTNERCUSTOMERSID],
"MonthCount", DISTINCTCOUNT('_Measures - Sales Return'[SalesReturnDateID])
)

VAR ProductsWithSales =
FILTER(
SelectedCustomersIDs,
[MonthCount] = NumberOfMonths
)

RETURN
IF(
COUNTROWS('_Measures - Sales Return') > 0,
1, 0
)  I want to  get 1 for a customers who has retured sequently month otherwise 0. But my code gives right reslt for the customer who has returned sequently month. But for the customer who has not returned sequently month i dont get right result, I have to get 0 for it but i get 1 some of customers who has not returned

[Greg_Deckler]

@Laman Can you share sample data (as text).

Sorry, having trouble following, can you post sample data as text and expected output?
Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.