ahhhhh. you are using the wrong event =]. the event you are setting up is not in the database but it is on th emap itself. Go to the map and ethe exact location the player will step on to get teleported, and go to the 'event layer' then set up the teleport:
what is circled is the event layer, click that then on the map (where the teleport will start) right click with the mouse and click new event.