Powershell Sciprts in SCCM TS

Question

I am working with SCCM 2012 using PowerShell scripts in the task sequence.
I want to be able to trigger a reboot and retry in the task sequence, and I think the code should pre pretty straight forward, but something is obviously wrong.
$tsenv = New-Object -COMObject Microsoft.SMS.TSEnvironment
for ($i = 0; $i -lt 10; $i++){
write-output $i " - " $tsenv.value("SMSTSRebootRequested") | out-file -filepath "C:\TestVal.log" -append
write-output " <<<<<<<<<<<<<>>>>>>>>>>>>>> " | out-file -filepath "C:\TestVal.log" -append
$tsenv.value("SMSTSRebootRequested")=$true
$tsenv.value("SMSTSRetryRequested")=$true
When I run the code manualy (f8 then run the script) there are no errors, but when I run it as a task sequence I get a generic 2147500037 error number.
In the task sequence this is a run command and its command is 'powershell.exe -executionpolicy bypass -file "TS_Var.ps1"'

Answer 1

In my Task Sequence I use powershell for importing startlayout to Windows 8, so the step itself is run powershell step, not command line. I only have .ps script name typed and execution policy set to bypass in UI. The command in .ps file starts like
POWERSHELL-NonInteractive-CommandImport-StartLayout...
bla bla bla :)
Hope this helps.