Timestamp variable

I am trying to script out a job to get files that are at least X minutes old. I see the method of grabbing file attributes and using that as a mask, but I am failing to understand where I could specify $transferOptions.FileMask = ("*>" + $(Get-Date -f "yyyyMMddHHmmss")+5) or something like that.


Any thoughts or suggestions?

See similar example for Session.PutFiles at:
https://winscp.net/eng/docs/faq_script_modified_files#no_old_files