On collision delegate with Tile maps, has anyone used it successfully?

I'm doing a test with a projectile running across a tilemap, enabled collision on in and created an oncollsion delegate. Never gets called. I did work around the problem to some extent with vector casting and checking for specific tile coordonates, but I still think that if the feature would work it would be more effective.

Just wondering if anyone has actually successfully fired an on collision delegate from a Tile map?