Disable AMFI not working

I use OpenCore 1.3.0 and successfully installed Monterey on my MBP 11,3.

Now I would like to disable AMFI, becaus I can't login to Express VPN. When I check to disable AMFI and built and installed again. After rebooting the checkbox was still unchecked and I checked the status of AMFI with nvram -p | grep -c "amfi_get_out_of_my_way=1". Result was "0".

What am I doing wrong?

submitted by /u/Richard_PDM
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