Need help with Set-VMHostAdvancedConfiguration

Hi

For some reason following commands don't work.

Please see the ouput errors.

Any idea why it doesn't work?

$value1 = "[$datastorename] $syslogFoldername/$hostname.log"
$value2 = "[]/scratch/log"

Set-VMHostAdvancedConfiguration -VMHost $vmhost -Name "ScratchConfig.ConfiguredScratchLocation" -Value $value1
Set-VMHostAdvancedConfiguration -VMHost $vmhost -Name "Syslog.global.log.DirUnique" -Value $value2

Set-VMHostAdvancedConfiguration : 25/02/2013 11:55:51 AM    Set-VMHostAdvancedConfiguration
A specified parameter was not correct.

At D:\sm\ScratchFolders\folder.ps1:23 char:33
+     Set-VMHostAdvancedConfiguration <<<<  -VMHost $vmhost -Name "ScratchConfig.ConfiguredScratchL
ocation" -Value $value1
    + CategoryInfo          : NotSpecified: (:) [Set-VMHostAdvancedConfiguration], InvalidArgument
    + FullyQualifiedErrorId : Client20_SystemManagementServiceImpl_GetVmHostAdvancedConfiguration_
   ViError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.SetVMHostAdvancedConfiguration

Set-VMHostAdvancedConfiguration : 25/02/2013 11:55:52 AM    Set-VMHostAdvancedConfiguration
'Syslog.global.log.DirUnique' is invalid or exceeds the maximum number of characters permitted.
At D:\sm\ScratchFolders\folder.ps1:25 char:36
+     Set-VMHostAdvancedConfiguration <<<<  -VMHost $vmhost -Name "Syslog.global.log.DirUnique" -Va
lue $value2
    + CategoryInfo          : NotSpecified: (:) [Set-VMHostAdvancedConfiguration], InvalidName
    + FullyQualifiedErrorId : Client20_SystemManagementServiceImpl_GetVmHostAdvancedConfiguration_
   ViError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.SetVMHostAdvancedConfiguration