I think I got it:
'Invoke-NaSsh "priv set diag;stats show wafl;priv set"
I was trying:
'Invoke-NaSsh "priv set diag"
'Invoke-NaSsh "stats show wafl"
'Invoke-NaSsh "priv set"
If anyone has a good example/script of 'Get-NaPerfData', please share
Thank you