How do I select a radio button?

I use another printer but wanted to test a solution given here. Using the Script UI Properties that Tom refers to, I was able to create a working AppleScript:

tell application "System Events"
	tell application process "Microsoft Word"
		tell window 1
			tell splitter group 1
				tell group 2
					tell radio button " Landscape"
						---click
						if value of attribute "AXValue" is not 1 then perform action "AXPress"
					end tell
				end tell
			end tell
		end tell
	end tell
end tell

My MS Word version and printer: