I am trying to add an existing Windows account set in laserfiche to a new creation group.

I make my group creation by using script but fail to add Windows account.

I can add laserfiche account but I want to add Windows account.

 // create group
            try
            {
                GroupInfo GI = new GroupInfo();               
                GI.Name = "1234-4321";
                GI.Session = RASession;
                GI.FeatureRights = FeatureRights.Scan | FeatureRights.Search | FeatureRights.Print | FeatureRights.Export;
                GI.Save();
                
        // assign member to group                   
               AccountInfo AI = Account.GetInfo(GI.Name, RASession);
               AccountReference AR = new AccountReference(AI);
               List<string> list = new List<string>();
               list.Add("domain\\newuser");
               list.Add("admin");
               IEnumerable<string> newlist = list;          
               Account.AddMembersToGroup(AR, newlist, RASession);
                
            }
             catch (Exception ex)
            {
            MsgBox("error in creation group, group already exist" + ex);
            }