PowerShell Code Needs Modifications

Hello,
I need the following code below to perform the following:
1. to append the FQDN to the $computerName variable.
2. The following  data needs to be populated

 __GENUS                          : 2
 __CLASS                          : Win32_EncryptableVolume
 __SUPERCLASS                     :
 __DYNASTY                        : Win32_EncryptableVolume
 __RELPATH                        : Win32_EncryptableVolume.DeviceID="\\\\?\\Volume{Commented OUT}\\"
 __PROPERTY_COUNT                 : 8
 __DERIVATION                     : {}
 __SERVER                         : TestSystem
 __NAMESPACE                      : root\CIMV2\Security\MicrosoftVolumeEncryption
 __PATH                           : \\TestSystem\root\CIMV2\Security\MicrosoftVolumeEncryption:Win32_EncryptableVolume.DeviceID=
                                    "\\\\?\\Volume{Commented OUT}\\"
 ConversionStatus                 : 1
 DeviceID                         : \\?\Volume{Commented OUT}\
 DriveLetter                      : C:
 EncryptionMethod                 : 6
 IsVolumeInitializedForProtection : True
 PersistentVolumeID               : {Commented OUT}
 ProtectionStatus                 : 1
 VolumeType                       : 0
 PSComputerName                   : TestSystem

Import-Module -Name ActiveDirectory
$resultFile = 'C:\Temp\ProtectionStatus.csv'
$computerList = Get-ADComputer -filter * -SearchBase "OU=Center Manager,OU=Clinical Desktops,OU=Computer Accounts,DC=ppct,DC=world" |
	Select-Object -ExpandProperty DNSHostName

$computerList | Foreach-Object {
	$computerName = $_
	"Processing $($computerName) ..." | Write-Host -ForegroundColor White -NoNewline
	Try {
		Get-WmiObject -ComputerName $computerName -Namespace "root\CIMV2\Security\MicrosoftVolumeEncryption" -Query "SELECT DriveLetter, ProtectionStatus FROM Win32_EncryptableVolume" -ErrorAction Stop |
			Select-Object -Property @{n='ComputerName'; e={$computerName}}, DriveLetter, ProtectionStatus, Error
		" OK" | Write-Host -ForegroundColor Green
	} Catch {
		$_ | Select-Object -Property @{n='ComputerName'; e={$computerName}}, DriveLetter, ProtectionStatus, @{n='Error'; e={$_.Exception.Message}}
		" ERROR" | Write-Host -ForegroundColor Red
	}
} | Export-Csv -NoTypeInformation -Path $resultFile
"Results written to '$($resultFile)'" | Write-Host -ForegroundColor White
Import-Csv -Path $resultFile | Out-GridView

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