scripting problem with backup.app

Can anyone help? I would really appreciate it.

I am trying to write a script for apple’s infernal backup.app, so it simply logs onto a server, backs up and then put the mac to sleep. I can’t believe it, but backup.app doesn’t support applescript!

Anyway I have read up on scripting the UI, which is what I am trying. First step is to select the correct method - backup to a drive. I now have the following script:


tell application "Backup"
	activate
	
	tell application "System Events"
		tell process "backup"
			tell menu bar 1
				tell menu bar item "View"
					tell menu "View"
						click menu "Back up to Drive"
					end tell
				end tell
			end tell
		end tell
	end tell
end tell

But all I get back is an error: “System Events got an error: NSReceiverEvaluationScriptError: 4”

I don’t understand the eror, let alone the problem. Can anyone help?

thanks
Martin