Using a Variable to Substitute the path\filename of a Batch file in the Start_Process Command

Question

I am trying to write a script that will execute a batch file on a remote Windows server.
This line below is basically what I'm trying to do and it works without error, however I would like to use a variable for the path\filename of the batch file.
invoke-command -computername QSC-A-ICE01 -scriptblock {Start-Process "\\qsc-a-ice01\D$\Test\RunThis.bat" }
If I try to use a variable as in this example below I receive the error below. The error seems to indicate it's it expecting a "FilePath" parameter. Is this true? How would I change this script to make it work when substituting a variable.
$MyProcess =  "\\qsc-a-ice01\D$\Test\RunThis.bat"
Write-Host $MyProcess
invoke-command -computername QSC-A-ICE01 -scriptblock {Start-Process "$MyProcess"}
This is the error text I receive when using a variable:
 PS C:\Windows\system32> D:\Test\ThisWorks.ps1
\\qsc-a-ice01\D$\Test\RunThis.bat
Cannot validate argument on parameter 'FilePath'. The argument is null or empty. Supply an argument that is not null or
empty and then try the command again.
    + CategoryInfo          : InvalidData: (:) [Start-Process], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.StartProcessCommand
    + PSComputerName        : QSC-A-ICE01
PS C:\Windows\system32>

Answer 1

Mike,
Thanks for providing the link, it was very informative. The link described how to use the args in a ScriptBlock and provided me with an explaination as to why it works the way it does on a remote server. This is my 1st post to the forum and I don't know
how the points system works yet.
I would like to split the points , but I don't see that this is possible.
You're very welcome, I'm glad that the information was helpful.
You can mark as many posts as answers as you'd like, there's not a restriction on only having a single answer per thread. You certainly don't have to though, David's answer is more than sufficient to help any future people who find this thread.
Also, on a side note, you may want to post in the thread below. Posting there will get your account verified so you'll be able to post links and images.
http://social.technet.microsoft.com/Forums/en-US/200c33c9-abe9-494a-953a-bf53fccb3c76/verify-your-account-11?forum=reportabug
(Future people - don't use that link.
Click here and look for the current thread as a sticky.)
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