Start-job with datetime arguments

Question

Hi,
It is working (of course), I get all objects which are newer then $timeFrom:
$timeFrom = "2014-03-25 9:00"
Get-ChildItem c:\temp | ?{$_.CreationTime -gt $timeFrom}
But is not working:
$timeFrom = "2014-03-25 9:00"
Start-Job -ScriptBlock {Get-ChildItem c:\temp | ?{$_.CreationTime -gt $args[0]}} -ArgumentList @($timeFrom)
I get all objects, but if I replace -gt to -lt the list will be empty. Teherefore any kind of compare working, but I can't understand how...
Anybody can help me?

Answer 1

When you're using variables defined outside of the scriptblock you have to pass them into the scriptblock.  I prefer to keep them all the same just because it's easier to understand for me.  Yours probably would have worked if you'd included the
param part:
Start-Job -ScriptBlock {param($args)Get-ChildItem c:\temp | ?{$_.CreationTime -gt $args[0]}} -ArgumentList
@($timeFrom)
but I'm not sure whether or not using $args works at all in this context.  It probably does, but without param it definitely wouldn't.
I hope this post has helped!