I can't use the detect hit block function on my projectile

I'm currently making a sword that allows you to throw it. However, in order to make sure it properly returns to the player after it's thrown, even if it hits a block, i need to detect if the projectile hits a block.

It uses a custom model, more specifically, this one: https://www.planetminecraft.com/texture-pack/oathbringer-shardblade/, however, through block bench, i have converted it to a java entity model as is necessary with custom projectile models.

Thanks for any help.