Giving a weapon the Shuriken animation

I want to turn a few items into "shuriken throwables", but when I try to use them, they give me the "knife used as throwable" animation. I went to a clean FFVI rom and copy pasted the regular, advanced and animation atributes of shurikens to the new items, but no luck.

Then I found out that no matter what animation I give them, I keep getting the dirk throwing animation. I copy pasted the Shiva animation and it STILL gives me the dirk-thowing animation. I'm assuming there's something that checks if an item is a shuriken and if yes, play the correct animation, but I'm not sure.

Can someone help?