MCAS does not block copy of passport numbers in Session Policy

I have one MCAS session policy to block copy and cut of passport numbers . In this policy, I use the buil-in content inspection 'All countries: PII: International passport (MRP)'. When I do test it out, it does not block copy of passport numbers as well. I just wanted to know preset expression for this buil-in content inspection such as keyword, sample data format etc. Thanks.