I am collecting birthday and other informations from `Activedirectory` using this 

```
Get-ADUser -Filter  {(extensionAttribute4 -like "Aktiv") -and (Enabled -eq $true)} -SearchBase "OU=*****,OU=*****,OU=*****,DC=*****,DC=****" -Properties * | select name, mail, extensionAttribute1 

```

extensionAttribute1 is the birthday and are type duble.
It is possible to convert the double to a date with this:

```
$date.AddDays(+27137).ToString("dd-MM-yyyy")

```

but how do I use it in this code:

```
Get-ADUser -Filter  {(extensionAttribute4 -like "Aktiv") -and (Enabled -eq $true)} -SearchBase "OU=*****,OU=*****,OU=*****,DC=*****,DC=****" -Properties * | select name, mail, extensionAttribute1 

```