Progress indicator for installing missing SCCM 2012 R2 updates

Question

Hi Everyone!  I've put together a simple powershell script to install missing SCCM updates and it works well but doesn't output anything to the console when its running.
How could I include a write-progress indicator during the While loop is running?
I'm thinking I could insert Write-Progress for the While (($CMInstallPendingUpdates.Count -ne 0) but I'm just not too familiar with the syntax required.  -Thanks!
# Get the number of missing updates
[System.Management.ManagementObject[]] $CMMissingUpdates = @(GWMI -ComputerName $server -query "SELECT * FROM CCM_SoftwareUpdate WHERE ComplianceState = '0'" -namespace "ROOT\ccm\ClientSDK") #End Get update count.
$result.UpdateCountBefore = "The number of missing updates is $($CMMissingUpdates.count)"
#Install missing updates.
If ($CMMissingUpdates.count) {
$result.UpdateCountBefore = "The number of missing updates is $($CMMissingUpdates.count)"
$CMInstallMissingUpdates = (GWMI -ComputerName $server -Namespace "root\ccm\clientsdk" -Class "CCM_SoftwareUpdatesManager" -List).InstallUpdates($CMMissingUpdates)
Do {
Start-Sleep -Seconds 15
[array]$CMInstallPendingUpdates = @(GWMI -ComputerName $server -query "SELECT * FROM CCM_SoftwareUpdate WHERE EvaluationState = 6 or EvaluationState = 7" -namespace "ROOT\ccm\ClientSDK")
#Not 100% sure $result.UpdateCountBefore is needed below.
$result.UpdateCountBefore = "The number of pending updates for installation is: $($CMInstallPendingUpdates.count)"
} While (($CMInstallPendingUpdates.count -ne 0) -and ((New-TimeSpan -Start $StartTime -End $(Get-Date)) -lt "00:45:00"))
} ELSE {
$result.UpdateCountAfter = "There are no missing updates."}

Answer 1

# Get the number of missing updates
[System.Management.ManagementObject[]] $CMMissingUpdates = @(GWMI -ComputerName $server -query "SELECT * FROM CCM_SoftwareUpdate WHERE ComplianceState = '0'" -namespace "ROOT\ccm\ClientSDK") #End Get update count.
$result.UpdateCountBefore = "The number of missing updates is $($CMMissingUpdates.count)"
#Install missing updates.
If ($CMMissingUpdates.count) {
$result.UpdateCountBefore = "The number of missing updates is $($CMMissingUpdates.count)"
$CMInstallMissingUpdates = (GWMI -ComputerName $server -Namespace "root\ccm\clientsdk" -Class "CCM_SoftwareUpdatesManager" -List).InstallUpdates($CMMissingUpdates)
$Increment = 100 / $CMInstallMissingUpdate.Count $Percent = 0 Do {
Start-Sleep -Seconds 15
[array]$CMInstallPendingUpdates = @(GWMI -ComputerName $server -query "SELECT * FROM CCM_SoftwareUpdate WHERE EvaluationState = 6 or EvaluationState = 7" -namespace "ROOT\ccm\ClientSDK")
#Not 100% sure $result.UpdateCountBefore is needed below.
$result.UpdateCountBefore = "The number of pending updates for installation is: $($CMInstallPendingUpdates.count)"       Write-Progress -Activity "Installing updates" -PercentComplete $Percent -Status "Working ..."
$Percent = $Percent + $Increment
} While (($CMInstallPendingUpdates.count -ne 0) -and ((New-TimeSpan -Start $StartTime -End $(Get-Date)) -lt "00:45:00")) Write-Progress -Activity "Updates installed" -Status "Done" -Completed} ELSE {
$result.UpdateCountAfter = "There are no missing updates."}