# Retrieve value
Get-VMHost myhost | Get-AdvancedSetting -Name 'UserVars.SuppressHyperthreadWarning' | Select Name,Value,Entity
# Set the value
Get-VMHost myhost | Get-AdvancedSetting -Name 'UserVars.SuppressHyperthreadWarning' | Set-AdvancedSetting -Valuie 1