So, I wanted to make the Kisho Ninja a little bit more deadly by replacing their blinding grenades with firebombs, while still keeping it's debuff effect.

To do this, I just modded the blinding grenade files the ability refers to (I think) making them look more like the Firebombs.
It worked great in a way: The ninjas got their firebombs, it looks awesome when they use it, and it's not -too- overpowered.

However, the blinding grenade ability is gone, instead they just throw the firebombs when asked to do a ranged attack!
Could someone point out what I did wrong?