powershell - 未设置 Powershell ACL

Question

我正在尝试将 ACL 设置为仅修改，但是当我运行它运行的代码时，但指定用户的权限仍然为空，我哪里出错了？

$ApplicationPoolIdentity = "domain\username"

function SetACL()
{
    param (
        [Parameter(Mandatory=$true)]
        [string]        $Path 
    )

    $Acl = Get-Acl $Path
    Write-Host "Path:" $Path "ID:" $ApplicationPoolIdentity
    $Ar = New-Object  system.security.accesscontrol.filesystemaccessrule($ApplicationPoolIdentity,"Write","Allow")
    $Acl.SetAccessRule($Ar)
    Write-Host $Acl
    $Acl | Set-Acl $Path
}

SetACL "F:\Test123\"