hi Luc
couldnt you have done this instead?
Get-VMHost | % {
($_ | Get-View).config.storagedevice.multipathinfo.Lun | %{$_.Path} | `
select Name, PathState | `
where {$_.PathState -eq "dead"} | `
Add-Member -PassThru NoteProperty Server $_.Name | `
Select Server, Name, PathState
}