Applescript "Next Slide" script for KeyNote while NOT playing a slideshow

I'm trying to make a script that goes to the next slide while in the "editor" of keynote... The equivalent of Slide > Go To > Next Slide in the menu.

This should be blatantly obvious, but I can't figure it out for the life of me.

The fastest way I've found to do this is:

tell application "Keynote"

activate

start front document

delay 0.2

show next

delay 1

stop front document

end tell

But this still needs to play the sideshow to go to the next slide...

Any help would be greatly appreciated!