Cannot get ToggleWatched to work from remote

I modified remote.xml with these settings:

<red>Delete</red>

<green>ToggleWatched</green>

<yellow>ToggleWatched</yellow>

<blue>ShowSubtitles</blue>

red does, in fact, delete now and blue does show subtitles (toggle) now but I cannot get green or yellow to toggle the watched flag on videos. Any ideas why?

Thanks!