Okay try this. I'll try and explain it clearly and go over every little point
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You want to put a sconce on the wall and have it so that when you put a torch in, a wall opens.
First, place the movable wall (FLOORITEM_WALL_MOVABLE) where you would like it to be. By default the setting for this is "visible" so you don't need to do anything more to this object.
Right-click a wall section and select "Edit". Add a new item - WALLITEM_SCONCE. Set the position of it on the wall (so it's facing out into the corridor or room or whatever.
Tick the box reading "Item is a trigger?".
The bit immediately below this tick-box will say "Operated by" and then a box containing the word NULL. To the right of this box is a small square box with three dots in it. Click this and find WEAPON_TORCH, or one of the others if you want it to be a torch which has been used a bit. You can only set one item as the trigger item so umm make sure someone knows they're gonna need a torch at that bit or something hehe.
Once you've selected your torch, the next section below that is the action performed by the trigger. You want it to switch the movable wall from "visible" to "invisible" so select "Toggle" here.
Give it a sound if you like, like a click or something. Optional.
The next four tick boxes are also optional - "Destroy Item" will destroy the torch when it is placed. "Disable Self" means that once this trigger has been used (ie torch placed and wall opened), it cannot be triggered again by removing and replacing the torch. "Constant Weight" means that the wall only stays open while the torch is there, and "Alternate State" ermm I think changes the trigger to its alternate state (if it has one), but I've never used this particular tick box so I'm not sure. For the purposes of what you want to do in your above post, you will only want to tick the "Constant Weight" box.
Next the targets. By the topmost target in the list click the "A" button (Add) and find the square on the mini-map that comes up which contains your movable wall. Double click this square. As the movable wall is the only thing on this square it will of course be auto-selected so just click the "OK" button.
Then click the "OK" button to close that window and you should be done - when a torch (of the charge you set in the trigger thing) is placed in that sconce, the movable wall will open. This is exactly the same procedure you follow when setting any such trigger or whatever.
I hope that's useful. I hope it works. I hop someone else hasn't jumped in first and done a quicker, better reply than me while I was typing this
. And I've never used a sconce in a dungeon so I don't know if there's any reason the above won't work. Unless they're bugged, it should do, however
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