Monitoring of mount point on Windows (perf_counter) ?

[Zablux01]

Hello, I try to monitor the free space on a mount point on Windows server.
Something that can be done by Get-counter "\logicalDisk% free space" in power shell.
it returns something like \\<HostName>\logicaldisk(c:\exchangevolumes\vol2)\ % free space : 97,123456789

Can I do it with perf_counter item ?
I don't find the right syntax : perf_counter[\logicaldisk(c:\exchangevolumes\vol2)\% free space]

Thank you

[Zablux01]

Oups sorry, it is only case sensitive perf_counter[\logicaldisk(c:\exchangevolumes\vol2)\% Free Space]
is working fine