Dynamically Add Delete TabCollection for AdvTabSet

I am using a registered version of AdvTabSet 1.7.1.6,  I have C++B XE4 Pro. I am using the 32 bit VCL platform. I believe I have downloaded all the .PDF help files. 

Is there a help file that shows the correct way to dynamically Add/Delete the TTabCollection with the AdvTabSet?  I am trying to dynamically add and delete tabs in AdvTabSet. 

This code snippet shows how you can programmatically add & remove tabs:


procedure TForm1.Button1Click(Sender: TObject);
begin
  AdvTabSet1.Advtabs.Add.Caption := 'new item';
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if AdvTabSet1.AdvTabs.Count > 0 then
    AdvTabSet1.AdvTabs.Delete(0);
end;