This example Powershell script finds the latest file in a folder and uploads it to a server, scheduled to run periodically.

Powershell is version 1 or 2. With higher versions, some commands may use a different syntax.

c:\temp\scpnewfile.ps1:
cd C:\Users\theuser\Documents\theapp\Pictures
$newfile = dir | sort-object lastwritetime -desc | select-object -first 1
pscp -pw thepassword $newfile.name theuser@thehost:.

powershell set-executionpolicy remotesigned
powershell -f scpnewfile.ps1

schtasks /create /sc minute /mo 5 /tn YongTest /tr "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe c:\temp\scpnewfile.ps1"
schtasks /tn YongTest
schtasks /query /v /tn YongTest <-- may as well use Task Scheduler GUI
schtasks /change /disable /tn YongTest
schtasks /change /enable /tn YongTest

c:\windows\system32\tasks\YongTest