You're reading the wrong spot in the walkthrough; that comes later in the level. Don't sweat it though, that's a very popular place to get stuck. It's actually a ridiculously easy puzzle once you know how.
You were on the right track with Force Seeing; but you should be more worried about being seen.
Right on the other side of the forcefield is a sentinel (that statue thing). Check it out with Force Seeing. Notice how the eyes are glowing?
Just find some way to prevent the sentinel from seeing you, and remember, this puzzle was designed to let only Force-users past.
"The Beasts know much that we do not." -Ancient Jedi proverb