Backup my Active Directory from my Hypr-v domain controller

I am trying to Backup my Active Directory from my Hypr-v domain controller to its house server via powershell.
The parameters i have run across :
- can make a "one time" MS Backup from the MS Backup software gui on DC of the to the housed server hard drive.
- can not make a "scheduled" MS Backup from MS Backup software gui on DC of the to the housed server hard drive.
--issues
---backup account does not have rights. (yes i gave full admin\backup admin rights)

-can make a "one time" MS Backup from the MS Backup software using powershell on DC of the to the housed server hard drive.
-can not run twice a "one time" MS Backup from the MS Backup software using powershell on DC of the to the housed server hard drive.
--issue
---backup job name already exist (must change name in script to run again
- can not make a "scheduled" MS Backup from MS Backup software powershell on DC of the to the housed server hard drive.
--issues
---will run once, but job name issue comes in


PS script
Register-ScheduledJob -Name “System State Backup10” -Trigger @{Frequency = “Daily”; At = “12:00”} -ScriptBlock {
      # Create new Backup Policy
      $Policy = New-WBPolicy

      # Add System State to the policy
      Add-WBSystemState -Policy $Policy

      # Set Backup Location
      $BackupLocation = New-WBBackupTarget -VolumePath "\\xxxsvra\svrA"

      # Add backup location to policy
      Add-WBBackupTarget -Policy $Policy -Target $BackupLocation

      # Start Backup Using Policy
      Start-WBBackup -Policy $Policy

ref link i used: https://blogs.technet.microsoft.com/poshchap/2015/02/05/schedule-a-system-state-backup-with-powershell/