Fail Agent job when file not found (Powershell)

Question

Hi
I am trying to create an agent job that looks for a file to exist and file if the file is not fount. I am using a try\catch block but the job will not fail. Any ideas?
try {
    Get-Item -Path E:\Migration Files\myfile.txt -ErrorAction Stop
} catch {
    # File Does Not Exist
}

Answer 1

That's actually it's job - to give you the opportunity to handle the error yourself.  
You use Try/Catch when you want to intercept the normal error processing and replace it with some action you define in the Catch block. In this case, you didn't give it any actions to perform, so it was done.
[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "