PowerShell and WMI to modify BIOS settings

I am trying to set the BIOS power-on password for HP using PowerShell /WMI. By going through the HP Client Management Interface technical white paper from HP, which describes the class and method to accomplish this task, and research. I came to know about the following command. I have set the setup password successfully. but unable to set power-on password.

  $Interface = Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSettingInterface  $Interface.SetBIOSSetting("Power-on Password","<utf-16/>" + "pass","<utf-16/>" + "pass")

The command runs successfully, however, it displays the return code 1.

if I execute the following command

Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSetting

power-on password does not exist at all, why is this option not present in my system? 

my system bios version/date: AMI F.O7, 23-04-2019

BIOS Mode : UEFI 

BaseBoard version: MVB, A

SMBIOS version:  3.2

System Model : HP Desktop Pro G2

System Type: X64-based  PC 

I have tried the HPCMSL  module too, while setting the  power-on password it showing not supported but working fine for setting and changing the Setup password.