Originally I did get a flame working so I made my own, but whenever I paste it into the .dat and set it read only, the game crashes on startup. Any ideas how to fix this?
EDIT: Also set the number after the flame to 1 (i.e. FLAME0 0; FLAME0 1;)

https://justpaste.it/19pvz

Here's the link to my .dat but in text form, not sure how to link it to an already made post.

Can you upload the .dat here so we can check if there's anything wrong with it?

Alright, I will.
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Added.

Just looking at the item.dat, I'd suggest trying changing 1's back to 0's after FLAME0 and FLAME1

I'll try it out
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Game still crashes on startup, not sure what's causing this.

delete it and verify game cache in steam? idk im not good with this stuff