Set-RegItem

function Set-RegItem
{
PARAM
(
    [string]$path,
    [string]$name,
    $value,
    [ValidateSet('string',
                'ExpandString',
                'Binary',
                'DWord',
                'MultiString',
                'Qword',
                'Unknown')]
    [string]$valuetype = 'string'
)

    $test = Get-ItemProperty -Path $path -Name $name -ErrorAction SilentlyContinue
    if ($test -ne $null)
    {
        if ((Get-ItemPropertyValue -Path $path -Name $name) -ne $value)
        {
            Remove-ItemProperty -Path $path -Name $name -Force
            New-ItemProperty -Path $path -Name $name -Value $value -PropertyType $valuetype | Out-Null
            return "$name changede to value $value"
        }
        else
        {
            return "$name exist with value $value"
        }
    }
    else
    {
        New-ItemProperty -Path $path -Name $name -Value $value -PropertyType $valuetype | Out-Null
        return "$name Created with value $value of type $valuetype"
    }
}