#load config into new XML object
$xml = New-Object XML
$xml.Load("$($TaskDir):\ProductionStaging\$($NewArtifactsFolder)\GGCPS_Node302\Giftango.Windows.GGCPS.exe.config")

#update NodeId
$xml.configuration.appSettings.add | Where-Object { $_.key -eq 'NodeId' } | ForEach-Object { $_.value = '302' }

#save the file
$xml.Save("$($TaskDir):\ProductionStaging\$($NewArtifactsFolder)\GGCPS_Node302\Giftango.Windows.GGCPS.exe.config")