Icon conditional formatting

[Sri_phani]

Hi, 

I am trying to apply icon conditional formatting to the matrix comparing current month scores with previous month. I have created the measure and it's working fine.

Recontact Difference =

VAR score = CALCULATE(

 [Recontact],

DATEADD('Calendar'[Dates],-1,MONTH)

)

VAR Diff = [Recontact]-score

RETURN

Diff

But the problem is with the starting month January 2024. For that values the conditional formatting should show blank. But I am getting arrows. My data start from January 2024. 

For information, my data model has Recontact column for which measure created - Average('raw data' [Recontact] and Many to One relationship between Raw data table and calendar table. 

Appreaciate any help in this.  

Thank you!

[Sri_phani]

Thank you @lbendlin, it worked like a magic

[lbendlin · Accepted solution]

Recontact Difference =

VAR score = CALCULATE(

 [Recontact],

DATEADD('Calendar'[Dates],-1,MONTH)

)

VAR Diff = [Recontact]-score

RETURN IF(NOT ISBLANK(score),

Diff)