http://blogs.msdn.com/powershell/archive/2009/03/26/tied-variables-in-powershell.aspxWith Add-Type and $executioncontext you can add special varibles that have tied values. I made $random, and $now add-type @" using System; using System.Management.Automation; public class RandomVariable : PSVariable { Random r; public RandomVariable ()en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/powershell/archive/2009/03/26/tied-variables-in-powershell.aspx#9512234Fri, 27 Mar 2009 01:39:46 GMT91d46819-8472-40ad-a661-2c78acb4018c:9512234infoblog &raquo; Tied Variables in PowerShell<p>PingBack from <a rel="nofollow" target="_new" href="http://blog.a-foton.ru/index.php/2009/03/27/tied-variables-in-powershell/">http://blog.a-foton.ru/index.php/2009/03/27/tied-variables-in-powershell/</a></p> http://blogs.msdn.com/powershell/archive/2009/03/26/tied-variables-in-powershell.aspx#9512297Fri, 27 Mar 2009 02:06:45 GMT91d46819-8472-40ad-a661-2c78acb4018c:9512297JasonMArcher<p>Dude! &nbsp;I have been looking for how to do just this. &nbsp;I figured out a way to do string based variables, but this is so much more powerful. &nbsp;Thank you for adding such great features.</p>http://blogs.msdn.com/powershell/archive/2009/03/26/tied-variables-in-powershell.aspx#9529741Fri, 03 Apr 2009 00:16:11 GMT91d46819-8472-40ad-a661-2c78acb4018c:9529741Windows PowerShell Blog<p>There are many ways to set a variable's value. I just learnt one more yesterday. If you have others,</p> http://blogs.msdn.com/powershell/archive/2009/03/26/tied-variables-in-powershell.aspx#9530089Fri, 03 Apr 2009 05:46:07 GMT91d46819-8472-40ad-a661-2c78acb4018c:9530089PowerShell Team Blog (external)<p>There are many ways to set a variable&amp;#39;s value. I just learnt one more yesterday. If you have others</p>