No, sorry. You see, what I would like is for the player to pick up some planks (an event which adds an item to your inventory and erases itself), and then be able to use the planks to bridge a gap (tile). I've tried it with events, but I could only make the player go Through, even when not on the plank. I am completely stuck.
I apologize, based on your original post I misinterpreted what you wanted to do.
Hopefully I have it right this time.
Based on what you said here, this sounds like the simplest solution to me. If it won't work please let us know why.
1. Build your bridge completed using the normal tile system.
2. Create an event with a graphic set as a hole/the broken part of the bridge, set it as same as player.
3. For that event make sure it's set to action button. Then make a conditional branch checking for the item in the player's inventory (say, the planks you wanted). When it's true you can remove the plank item from the inventory && erase the event (if it's a permanent fix then I'd recommend self switches). If you use self switches, make sure the player can pass the event afterwards.
4. Make an event for your wooden planks, set with the image for the planks as the graphic, and same as player. As you said, you can make it add the item to the player's inventory, and make sure to erase the event after..
This should accomplish what you said in the easiest way, and if you don't use a switch (but instead a self-switch or something) you should be able to just copy && paste these events if you need to reuse them.
P.S. I forgot to add, if you're using a character set instead of a tileset for the event images make sure you set it as direction fixed.