Finding age of administrator accounts on multiple machines in AD using powershell?

Param
(
       [Parameter(Position=0,Mandatory=$false)]
       [ValidateNotNullorEmpty()]
       [Alias('cn')][String[]]$ComputerName=$Env:COMPUTERNAME,
       [Parameter(Position=1,Mandatory=$false)]
       [Alias('un')][String[]]$AccountName,
       [Parameter(Position=2,Mandatory=$false)]
       [Alias('cred')][System.Management.Automation.PsCredential]$Credential
)
       
$Obj = @()

Foreach($Computer in $ComputerName)
{
       If($Credential)
       {
              $AllLocalAccounts = Get-WmiObject -Class Win32_UserAccount -Namespace "root\cimv2" `
              -Filter "LocalAccount='$True'" -ComputerName $Computer -Credential $Credential -ErrorAction Stop
       }
       else
       {
              $AllLocalAccounts = Get-WmiObject -Class Win32_UserAccount -Namespace "root\cimv2" `
              -Filter "LocalAccount='$True'" -ComputerName $Computer -ErrorAction Stop
       }
       
       Foreach($LocalAccount in $AllLocalAccounts)
       {
              $Object = New-Object -TypeName PSObject
              
              $Object|Add-Member -MemberType NoteProperty -Name "Name" -Value $LocalAccount.Name
              $Object|Add-Member -MemberType NoteProperty -Name "Full Name" -Value $LocalAccount.FullName
              $Object|Add-Member -MemberType NoteProperty -Name "Caption" -Value $LocalAccount.Caption
      $Object|Add-Member -MemberType NoteProperty -Name "Disabled" -Value $LocalAccount.Disabled
      $Object|Add-Member -MemberType NoteProperty -Name "Status" -Value $LocalAccount.Status
      $Object|Add-Member -MemberType NoteProperty -Name "LockOut" -Value $LocalAccount.LockOut
              $Object|Add-Member -MemberType NoteProperty -Name "Password Changeable" -Value $LocalAccount.PasswordChangeable
              $Object|Add-Member -MemberType NoteProperty -Name "Password Expires" -Value $LocalAccount.PasswordExpires
              $Object|Add-Member -MemberType NoteProperty -Name "Password Required" -Value $LocalAccount.PasswordRequired
              $Object|Add-Member -MemberType NoteProperty -Name "SID" -Value $LocalAccount.SID
              $Object|Add-Member -MemberType NoteProperty -Name "SID Type" -Value $LocalAccount.SIDType
              $Object|Add-Member -MemberType NoteProperty -Name "Account Type" -Value $LocalAccount.AccountType
              $Object|Add-Member -MemberType NoteProperty -Name "Domain" -Value $LocalAccount.Domain
              $Object|Add-Member -MemberType NoteProperty -Name "Description" -Value $LocalAccount.Description
           $Object|Add-Member -MemberType NoteProperty -Name "Password Age" -Value $LocalAccount.PasswordAge
        
              
              $Obj+=$Object
       }
       
       If($AccountName)
       {
              Foreach($Account in $AccountName)
              {
                     $Obj|Where-Object{$_.Name -like "$Account"}
              }
       }
       else
       {
              $Obj
       }
} 

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