Highlight missing dates using DAX

[POSPOS]

Hi All,

I have a requirement to highlight a date if it is blank. Data is available in two tables.

Please find sample data below:
Table1:

Protocol	Status
19	In-Progres
20	Activated
21	Closed
22	Open

Table2:

Protocol	RDate
19	06/12/2023
20	05/05/2021
21

Requirement : If the date is blank , then show as 1 else 0.
I created a column in Table 2 as

BlankValues = 
IF(ISBLANK('Table (2)'[RDate]),1,0)

When , I use this column with Table1, there is no value for a protocol if it is not available in Table2.

Protocol	Blank Values
19	0
20	0
21	1
22

Please find sample pbix file in the link below:
https://drive.google.com/file/d/17ZFDxOfCDedtMN9vJxl17R06r-WauDP7/view?usp=sharing
Thank you

[vanessafvg]

if you add this as a new measure this should bring back the required result

Is Blank =

var result = SUM('Table (2)'[BlankValues]) +0

return  if(result =1,0,1)