Editing GPO with Powershell

Hi, is-it possible to edit a GPO with Powershell, what I’m looking for is to update a the Security Parameter - File System.
For example add authenticated user , folder and subfolder in write execute on the directory D:\EXPL

The area you’d like to edit is not directly exposed via the Group Policy cmdlets (https://technet.microsoft.com/en-us/library/ee461027.aspx) as far as I know.

As alternative you could backup the GPO with the Backup-GPO cmdlet, modify the .inf file for the file system permissions and import the modified backup again via Import-GPO again.

However, you need to ask yourself if a group policy modification really needs to be automated.

Only way I know to read/write GPO settings is to use SDM software