SCOM 2012 notification channel error

Hello Gurus

I have got a question which I can’t find an answer to.

I have got a script(I didn’t write it), which looks at the names of certain alerts and then changes it on SCOM 2012. I have created the it looks like the following:

param ($rootMS)
$rootMS=”
#Initializing the Ops Mgr 2007 Powershell provider
add-pssnapin “Microsoft.EnterpriseManagement.OperationsManager.Client” -ErrorVariable errSnapin ;
set-location “OperationsManagerMonitoring::” -ErrorVariable errSnapin ;
new-managementGroupConnection -ConnectionString:$rootMS -ErrorVariable errSnapin ;
set-location $rootMS -ErrorVariable errSnapin ;

$Alerts = get-alert -criteria ‘Name = ”IIS 7 Web Site is unavailable”’ | Where {$_.ResolutionState -eq 0}
foreach($Alert in $Alerts)
{$Alert.ResolutionState = 20
$Alert.Update(“Resolution State Changed”)}

It works when I run it from the powershell window but doesn’t seem to work from the command channel i.e, the alerts get changed when I run it manually it works and the . My command channel looks like this:

Full path of the command line:
c:\windows\system32\WindowsPowerShell\v1.0\powershell.exe
Command line parameters:
“C:\Temp\ChangeResState_IIS.ps1″ ‘$Data/Context/DataItem/AlertId$’
Startup folder for the command line:
c:\windows\system32\windowspowershell\v1.0\

I have also tried C:\Temp\ChangeResState_IIS.ps1 and C:\Temp as the Command line parameters:and Startup folder for the command line:without any luck.

I have looked in a lot of different articles but there seems to be a lot of contradictory directions on what the command channel should be.

I think the command line parameter might be wrong. Also should the startup folder be what it is or should that be changed. I am new to SCOM and powershell, please help? Any help will be greatly appreciated.

Thanks in advance.

Regards,