I was able to download from Thwack a file age monitor template that was looking for files older than a specific time. I updated the PowerShell script so it looks for files less than a specific time but I think I am missing some additional information in the PS script or I just do not know how to alert on a statistic.
When a file is found that is less than 60 mins old I get this output.
When no file is found that is less than 60 mins old I get this output. I was going to try and setup the alert for up/down but I am not sure what else I need to change in the script So I was going to try and setup an alert based on the statistic. I have tried a few different alerts but they do not work correctly.
. 
Here is the script hopefully I am not too far off on this at all. I am a PS novice and this is the first PS monitor I am working on for Orion. Thanks! Dave
param([string]$path, [int]$minutes)
# Created by Thwack user Chad.Every. See thwack.solarwinds.com/.../DOC-190598 for more detail.
# Pass in the directory path including a * with the extension type you want to check. Then pass in the number of minutes old that file needs to be.
#Example, change this path to the folder/file type you wish to monitor. Wildcard in file name and extension are supported.
$path="E:\Removed\This works\*.xls"
$stat=0
$msg=""
try
{
$LastWrite = $(Get-Date).AddMinutes(-$minutes)
#If you want to include sub folders comment the next line and uncomment the following line
#$FileArray = $(Get-ChildItem $path | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $LastWrite })
$FileArray = $(Get-ChildItem $path -Recurse | Where-Object { !$_.PSIsContainer -and $_.CreationTime -gt $LastWrite })
if (($FileArray | Measure-Object).count = "0")
{
$msg = "No file found less than $($minutes) minutes old"
}
else
{
$stat=$FileArray.Count
$msg = "$($stat) files found less than $($minutes) minutes: "
foreach ($file in $FileArray)
{
$msg+=" " + $file + ","
}
}
}
catch
{
$stat=1
$msg=$_.Exception.Message
}
Write-Host "Statistic: $stat"
Write-Host "Message: $msg"
exit 0
