Exception calling "AddAccessRule" with "1" argument(s): "Some or all identity references could not be transla ted." error

Hi guys, Im trying to make a permission group, folder and set the permission to the folder, but it returns me this error :

Exception calling "AddAccessRule" with "1" argument(s): "Some or all identity references could not be transla
ted."

It drives me crazy

this is part of my code

###create AD group

new-QADGroup -proxy -Name $orgBasedResourceName -samAccountName $orgBasedResourceName -ParentContainer $targetOU -Description $desc -GroupScope  $targetGroup.GroupScope -GroupType $targetGroup.GroupType

###create folder

New-Item -ItemType directory -Path ($dir+$deptListCode)

###set the permission

$colRights = [System.Security.AccessControl.FileSystemRights]"Read, Write"

$InheritanceFlag = [System.Security.AccessControl.InheritanceFlags]::None
$PropagationFlag = [System.Security.AccessControl.PropagationFlags]::None

 $objType =[System.Security.AccessControl.AccessControlType]::Allow
                    
$objUser = "AMAIISDOM\"+$orgBasedResourceName
$objACE = New-Object System.Security.AccessControl.FileSystemAccessRule `
                        ($objUser, $colRights, $InheritanceFlag, $PropagationFlag, $objType)
                    
$objACL = Get-ACL ($dir+$deptListCode)
                  
$objACL.AddAccessRule($objACE)

Set-ACL ($dir+$deptListCode) $objACL

both of folder and the ad group are created, but the group just can not be set to the folder