Hi Fadil,
can you please check if the string "MS-Organization-P2P-Access" is indeed part of the Certificate Name (Subject)?
What about just trying with P2P?
Did you look at the examples from the MP Guide:
Please find also the ref to the reg ex on the Microsoft Learn site:
Regular Expression Language - Quick Reference
and you can also use the RegEx101 page to test your expressions:
the most important thing is to check the exact Certificate name and find a suitable regex for it.
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Stoyan Chalakov