Power Shell - Running a program - Issues ??

Hi

I used http://social.technet.microsoft.com/wiki/contents/articles/7703.powershell-running-executables.aspx as the basis of trying to run a exe from powersehll which has arguments.

Article Example

"$AllArgs = @('filename1', '-someswitch', 'C:\documents and settings\user\desktop\some other file.txt', '-yetanotherswitch')

>> Can anyone see what the issue could be ?

Thanks in advance

cd "C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE"
$AllArgs = @("status", $area, "/resursive", ("/user:" + $user), ("/collection:" + $serverCollection))
# next line works
#& '.\tf.exe' status $/tools /recursive /user:ouruser /collection:http://syd-xxx.domain.com:8080/tfs/oosa 
# this does not work& '.\tf.exe' $AllArgs

From powergui debugger
 for $AllArgs
{status, $/Tools, /resursive, /user:ouruser, /collection:http://syd-xxx.domain.com:8080/tfs/oosa}