Extract Event Time from Windows Log using PS - powershell

Question

I am executing this powershell script to check the Windows Event Log viewer for a speficic job result.
It's working, however I'm stuck on one part...
I'm trying to do is pull the last/most recent event time/date and add it to the exit code.
"Task Completed Successfully at **_______**"
I have looked around a bit and tried a few different approaches without success... not the best at PS, can someone assist?
Param(
[string]$Task,
[string]$PastMinutes
)
$StartAt = (Get-Date).AddMinutes(-$PastMinutes)
$ErrorActionPreference = "SilentlyContinue"
$action = (Get-WinEvent -FilterHashtable #{logname="Microsoft-Windows-TaskScheduler/Operational"; id=102; StartTime=$StartAt} |
Where-Object {($_.Message -like $Task) -and ($_.Message -like "Task Scheduler Successfully Finished*")})
if ($action.count -ne "0") {
Write-Host "OK: "$Task" Task Completed Successfully at _______!"
Exit 0
} else {
Write-Host "CRITICAL: "$Task" Task Failed to Complete!"
Exit 2
}

Answer 1

I really do hate condensing code in ultralong lines until it is nearly unreadable.
As $action(s) has a .TimeCreated property, I'd use that.
This may work:
Param(
[string]$Task,
[string]$PastMinutes
)
$StartAt = (Get-Date).AddMinutes(-$PastMinutes)
$ErrorActionPreference = "SilentlyContinue"
$FilterHashTable = #{
logname = "Microsoft-Windows-TaskScheduler/Operational"
id = 102
StartTime = $StartAt
}
$actions = (Get-WinEvent -FilterHashtable $FilterHashTable |
Where-Object {($_.Message -like $Task) -and
($_.Message -like "Task Scheduler Successfully Finished*")})
## set negative result hopefully overwritten by action
$Result = "CRITICAL: {0} Task Failed to Complete!" -F $Task
if ($actions){
ForEach($action in $actions){
$Result = "OK: {0} Task Completed Successfully at {1}" -F $Task,$action.TimeCreated
}
}