Passing Parameters to powershell script in scheduled task - windows

Question

I am trying to create a scheduled task that will run a Powershell script with 1 parameter - this is on Server 2012 with Powershell v5 installed. So far I have been able to get the task to run, but it doesn't recognize my param value - the value is null in my script that I am calling. Here is what I have to create the scheduled task:
$TicketTime = "9:00pm"
$EmpID = "1234"
$Firstname = "Test"
$Lastname = "User"
$Action = New-ScheduledTaskAction -Execute "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Argument "-ExecutionPolicy ByPass -File C:\Scripts\Term.ps1 -EmpID '$EmpID'"
$Trigger = New-ScheduledTaskTrigger -Once -At "03/29/2016 $TicketTime"
$Task = New-ScheduledTask -Action $Action -Trigger $Trigger -Settings (New-ScheduledTaskSettingsSet)
$Task | Register-ScheduledTask -TaskName "$Firstname $Lastname" -User "myuser" -Password "mypass"
This will execute successfully, but will not recognize the -EmpID parameter. I have also tried -Command instead of -File for the Argument value but I get the same result.
-ExecutionPolicy ByPass -Command "& C:\Scripts\Term.ps1 -EmpID 1234"
Single quotes around the param doesn't seem to do anything either
-ExecutionPolicy ByPass -Command "& C:\Scripts\Term.ps1 -EmpID '1234'"
So far nothing I do will get the param to pass. What am I missing?

Answer 1

Can you try and declare your parameters as positional rather than named:
[CmdletBinding()]
Param (
[Parameter(Position=0)]
[string]$Ticket
)
"-ExecutionPolicy ByPass -File C:\Scripts\Term.ps1 '$EmpID'"
Then you can drop the -ParamName and pass it in using position.

Answer 2

You can use the -File option, you just need to separate out the string:
Change
-ExecutionPolicy ByPass -File "& C:\Scripts\Term.ps1 -EmpID 1234"
to
-ExecutionPolicy ByPass -File "C:\Scripts\Term.ps1" -EmpID "1234"
The full string out look like this:
$Action = New-ScheduledTaskAction -Execute "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Argument "-ExecutionPolicy ByPass -File `"C:\Scripts\Term.ps1`" -EmpID `"$EmpID`""