Trying to run a powershell script using F# FAKE but nothing happens... there are no errors, the target loads but nothing actually is run.

```
// include Fake lib
#r "packages/FAKE/tools/FakeLib.dll"
#r "System.Management.Automation"

open System
open System.IO
open System.Diagnostics
open System.Management.Automation

    Target "Powershell" <| fun _ ->
    PowerShell.Create()
      .AddScript("& 'build-database.ps1'")
      .AddParameter("BuildVersion", version)
      .AddParameter("Debug", "")
      .Invoke()
      |> Seq.iter (printfn "%O")

// Dependencies
"Clean"
  ==> "Powershell"

// start build
RunTargetOrDefault "Powershell"

```

Am I missing something? Without any error I am not sure what the issue is.

**\* Updated \***

This is the powershell script I am testing with, FAKE does nothing.

```
New-Item c:\AnEmptyFile.txt -ItemType file

```