Vergil's Ex Provocation vs Dive Bomb attempt (Didn't work)

Sadly, the slash at the end doesn't have enough power to knock Boss Vergil off of his Dive Bomb.
Some people asked for me to attempt it in a previous video and I also wanted to see if it could work
Now, my attempt in this one might be flawed. Maybe Boss Vergil was too far to receive the full effect of the Slash..