Is it possible to set custom return codes with powershell steps?

I have a PowerShell script that deploys signatures.

fail - unable to access computer

return 0 - nothing to deploy (signature is already there)

return 1 - deployed signature, see output log for more info.

• Is there an output I can set at the end of the powershell script to identify how it went on a specific machine?

Here's the script: 

$ErrorActionPreference = "Continue"
$LatestSignatureFolder = "\\pdq\Repository\Signatures"
foreach ($PCUsername in $(Get-ChildItem c:\users)){
$PCUsernameADready = $PCUsername -replace '.comp',''
if($PCusername -like "*pdq.user*"){continue}
$aduser = (([adsisearcher]"(&(objectCategory=User)(samaccountname=$PCUsernameADready))").findall()).properties.userprincipalname
if(!($aduser)){Write-Debug "Can't find $PCUsernameADready in AD, skipping to next user";continue}
if($aduser -like "*@compsolutions.ca"){$signame = "NewcompSigSept2018"}
if($aduser -like "*@compandassociates.com"){$signame = "NewcompASig2018"}
$UserSignatureLocation = "C:\Users\$PCUsername\AppData\Roaming\Microsoft\Signatures"
if(Test-Path "$LatestSignatureFolder\$aduser"){
if(Test-Path $UserSignatureLocation){
Write-Debug "Trying to find OUTLOOK SIGNATURE for $PCUsernameADready to use - $LatestSignatureFolder\$aduser"
if(!(Test-Path "$UserSignatureLocation\$signame.htm")){Copy-Item "$LatestSignatureFolder\$aduser\$signame.htm" "$UserSignatureLocation\$signame.htm" -Verbose -Force}
#if(!(Test-Path "$UserSignatureLocation\$signame.htm")){Copy-Item "$LatestSignatureFolder\$aduser\*" "$UserSignatureLocation" -Verbose -Force -Recurse -Container}
if(!(Compare-Object -ReferenceObject $(Get-Content "$LatestSignatureFolder\$aduser\$signame.htm") -DifferenceObject $(Get-Content "$UserSignatureLocation\$signame.htm"))){Write-Debug "Signature for $aduser has not changed since last deployment";Write-Output "Nothing Deployed";continue}
Copy-Item "$LatestSignatureFolder\$aduser\$signame.htm" "$UserSignatureLocation\$signame.htm" -Verbose -Force
#Copy-Item "$LatestSignatureFolder\$aduser\*" "$UserSignatureLocation" -Verbose -Force -Recurse -Container
}else{Write-debug "Cannot find $UserSignatureLocation"
#Copy-Item "$LatestSignatureFolder\$aduser\$signame.htm" "$UserSignatureLocation\$signame.htm" -Verbose -Force
#Copy-Item "$LatestSignatureFolder\$aduser\*" "$UserSignatureLocation" -Verbose -Force -Recurse -Container
}
}else{Write-Debug "Can't find signature for $PCUsername"}
}