not gonna bother reading your posts that are 2 minutes appart
ok so with the hitting a switch thing, have the event for the switch turn a switch on.
have the event for the switch also cycle thru its graphics to make it look like you flipped it (use a move event, change graphic, wait, change graphic, wait, change graphic)
have a closed door as an event somewhere (this is the door that opens)
make a new page for the event
set the precondition for the page to having the switch flipped by the switch=ON
set the graphic to be an open door
have the page with the open door include the teleport to wherever the door goes on action key or hero touch