[Closed] How to switch dialog to Raytracer in Render Setup?

Hi everyone,
I want to switch dialog to Raytracer in Render Setup dialog,but below codes need to more steps ,can anyone help me?thanks!

	get_raytracer=""
	DialogMonitorOPS.unRegisterNotification id:#Raytracer
	DialogMonitorOPS.enabled = off
	renderSceneDialog.open()
	for i in (windows.getChildrenHWND (windows.getDesktopHWND())) where matchPattern i[5] pattern:"Render Setup: *" do get_raytracer=i[1]	
	DialogMonitorOPS.enabled = on
	DialogMonitorOPS.RegisterNotification UIAccessorNotification id:#Raytracer
	
	--Get the Raytracer text name,and switch current to it.	
	--got_Raytracer_text=?
	--UIAccessor.pressButton got_Raytracer_text
	
	--for i in (windows.getChildrenHWND get_raytracer) do print i[5] --get sub column name,does not work

	DialogMonitorOPS.unRegisterNotification id:#Raytracer
	DialogMonitorOPS.enabled = off