how, like this.?

[Aceguy]

using this method

$a=_GUICtrlTreeView_Add($hTreeView, 0, "hello")
_GUICtrlTreeView_Add($hTreeView, $a, "one")
_GUICtrlTreeView_AddChild($hTreeView, $a, "two")

[Zedna]

$a=_GUICtrlTreeView_Add($hTreeView, 0, "hello")
$b=_GUICtrlTreeView_AddChild($hTreeView, $a, "one")
$c=_GUICtrlTreeView_AddChild($hTreeView, $b, "two")