Custom registry script/binary problems

PowerShell Help
1

Hey all,

I’ve got some issues with a custom made script, which simplifies adjusting registry values.
First let me show you the function:

function Create-Location
{
[CmdletBinding[]]
    Param[
    # Param1 help description 
    [Parameter[Mandatory=$true]]  
    [String]$LiteralPath,
    # Param2 help description
    [Parameter[Mandatory=$false]]  
    [String]$Name,
    # Param3 help description 
    [String]$Value,
    # Param4 help description 
    [String]$PropertyType
    ]

    if[![Test-Path -Path $LiteralPath]] 
    {
    $Caption = "Please confirm:"    
    $Message = "$Literalpath does not exist. Do you want to create it?"
    [int]$DefaultChoice = 0
    $Yes = New-Object System.Management.Automation.Host.ChoiceDescription "&Yes", "Do the job."
    $No = New-Object System.Management.Automation.Host.ChoiceDescription "&No", "Do not do the job."
    $Options = [System.Management.Automation.Host.ChoiceDescription[]][$Yes, $No]
    $ChoiceRTN = $host.ui.PromptForChoice[$Caption,$Message, $Options,$DefaultChoice]
    if [ $choiceRTN -ne 1 ] {New-Item -Path $LiteralPath -Force}
    else {}
    }

    If[$Name]
    {
     Write-Host "Set-Location -LiteralPath $LiteralPath"
     Set-Location -LiteralPath $LiteralPath
     Write-Host "New-ItemProperty -Path `".\`" -Name $Name -Value $Value -PropertyType $PropertyType –Force"
     New-ItemProperty -Path '.\' -Name $Name -Value $Value -PropertyType $PropertyType –Force
     }

    $LiteralPath = $null
    $Name = $null
    $Value = $null
    $PropertyType = $null
 }

Now, with this function, I can easily adjust bulk values of registry data like this:

Create-Location -LiteralPath 'HKCU:\Software\Something' -Name 'Something' -Value 'Something' -PropertyType "DWord"

And this is working fine for most registry entries and values, except for this one:

Create-Location -LiteralPath 'HKCU:\Control Panel\Desktop' -Name 'UserPreferencesMask' -PropertyType Binary -Value [[byte[]] [0x90,0x12,0x03,0x80,0x0A,0x10,0x00,0x00]]

No matter what I’ve tried, it just won’t accept the byte value with the use of the Create-Location function.
Strangely enough, when I use it the “old-fashion” way, it works.

Set-Location -LiteralPath 'HKCU:\Control Panel\Desktop'
New-ItemProperty -Path '.' -Name 'UserPreferencesMask' -Value [[byte[]] [0x90,0x12,0x03,0x80,0x0A,0x10,0x00,0x00]] -PropertyType "Binary" -Force

I’ve tried putting the value into a variable in numerous ways, but it’s only accepted with the New-ItemProperty method.
At this point, Ive ran out of ideas…

Is there some mistake I’m making in the format of the function?
If anyone here knows a solution, I’d be happy to hear it from you!

Thanks and regards,

T.O.

2

Troy,

If you remove the [String] data type attribute of your $Value parameter in the Param block it should work as expected.

Before:

Param (
  # Param1 help description 
  [Parameter(Mandatory=$true)]  
  [String]$LiteralPath,
  # Param2 help description
  [Parameter(Mandatory=$false)]  
  [String]$Name,
  # Param3 help description 
  [String]$Value,
  # Param4 help description 
  [String]$PropertyType
)

After:

Param (
  # Param1 help description 
  [Parameter(Mandatory=$true)]  
  [String]$LiteralPath,
  # Param2 help description
  [Parameter(Mandatory=$false)]  
  [String]$Name,
  # Param3 help description 
  $Value,
  # Param4 help description 
  [String]$PropertyType
)
3

To piggy back on what Daniel is saying, you’re specifying a [string], which is looking for one single value/object. Either remove [string] or use [string] instead, which allows for multiple objects.

4

Thanks for the reply all!
The script is now working as it should.