Zemunist quest, An Incident, Room of Darkness

I'm in the pitch black room, and I can't figure out what to do.

Can someone help me?

# Secret Document.
# Holding up while walk to the right, you'll find a rope. Climb up the rope and walk left while holding up. Climb up the second rope, you'll be at the top left of the map. Keep walking to the right until you drop down twice. In the middle of that platform, there is a rope in the sky, jump to reach it. Then walk to the right.

Taken from here...http://strategywiki.org/wiki/MapleStory/...hal_Desert