RM2K3 - NEED HELP MAKING A PUZZLE...

I want to have a puzzle that opens a door when multiple pressure plates are activated at the same time. I already have the NPC coded to move where I direct it and follow the player on command. I also already have the plates set to activate when the player is standing on them (and I'm pretty sure I can figure out how to turn them off after you walk away).
So my question is: how do I get the pressure plates to activate when the NPC is standing on them?

author=Trihan
Have a parallel process on the map somewhere that sets two variables to the X and Y coordinates of the NPC. Then have a conditional branch that checks whether the X and Y values are the same as the map position of the plate, and if so the NPC is standing on it.

Okay I just tried this but it didn't work? I'm really new to Rpg Maker so I honestly don't know what I did wrong. Here's an image of the code:

I also have the trigger set to Parallel Process like you said.
Clarification in case you ask: those are the coordinates of the plate (I double- and triple-checked haha), the switch operation is also set to the same value as the pressure plate, and I made sure nothing else shares the same variable or switch value.
Thank you, and thank you again in advance!