$_ is being interpolated by the powershell (it means The current pipeline object, used in script block).

Try it with single-quotes. I have see some conflicting references, saying that non-interpolated strings are enclosed in backticks (They call them Apostrophes) or this character ’’, but single-quotes should work.

     "As you get older three things happen. The first is your memory goes, and I can't remember the other two... " - Sir Norman Wisdom

In reply to Re: Invocation in PowerShell not working by NetWallah
in thread Invocation in PowerShell not working by matejhowell

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