Sitecore SPE Script to update workflow states under specific node

UpdateWorkflow.ps1

Write-Host "Starting work in the context of the 'master' database, under /sitecore/content/website1/Data item."
Set-Location -Path "master:/sitecore/content/website1/Data"

# Set up variables
$workflowState1 = "{xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}" #ID of the workflow states. 
$workflowState2 = "{yyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy}"
$workflowState3 = "{zzzzzzz-zzzz-zzzz-zzzz-zzzzzzzzzzzz}"

function Update-Workflows {

    # Logic
    foreach ($item in Get-ChildItem . -Recurse)
    {
        foreach ($version in $item.Versions.GetVersions($true))
        {
            if (($version.Fields["__Workflow state"].Value -eq $workflowState1) -or ($version.Fields["__Workflow state"].Value -eq $workflowState2) -or ($version.Fields["__Workflow state"].Value -eq $workflowState3))
            {
                $version.Editing.BeginEdit();
                $version.Fields["__Workflow state"].Value = "{aaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa}"
                $version.Editing.EndEdit();
                #Publish-Item $version -Target "web" -PublishMode SingleItem -Language $version.Language 
            
                Write-Host $version.ID " - " $version.Language 
                $version;
            }
            else
            {
                #Write-Host "NOT UPDATED: " $version.ItemPath " - " $version.Language 
            }
        }   
    }

}

Update-Workflows