Sorry for late response Paul. I just tried it myself and it worked. I think the missing piece is to go to System->Preferences->Assistive Technologies. Click 'Enable assistive technologies'. Then click 'Close and logout' and log back in. The script drives the interface using assistive technologies.
Sorry for late response Paul. I just tried it myself and it worked. I think the missing piece is to go to System- >Preferences- >Assistive Technologies. Click 'Enable assistive technologies'. Then click 'Close and logout' and log back in. The script drives the interface using assistive technologies.