Script Error for opening a door with key

[Samonochrome]

I'm stomped on why this is giving me an issue...
I made a script for my Silver Key to open this one door only. So I took the script written for the other doors to open and modified it for this door to only open when the player has the silver key in his inventory. But the only error I get is, "the name 'player' does not exist in the current context'. I don't have this issue for my other door scripts so I'm a little confused, any suggestions? Thank you for your time.

[Professor Watkins]

this script doesn't know who "player" is. However, it does know who "other" is (it's the thing that actually tripped the Trigger).