[solved…?] Need a help for a Sound

Hello community!

I’m trying to make a mod, and it involves a lot of Class Tweak/Redesign. And I have a trouble about Sound on a hero’s attack. I added Riposte to Guard Dog (Houndmaster), but it doesn’t play a Sound, and it gives an error message instead.

I modified houndmaster.info.darkest and effects.darkest to define Riposte, and
riposte_skill: .id “riposte1” .anim “attack_sickem” .fx “hounds_rush” .targchestfx “blood_splatter” in houndmaster.art.darkest .

Then it had an error message of:
FMOD: Could not find ID for event
‘event/char/ally/houndmaster_riposte1’

What should I do to fix this? Or is it un-fixable without proper tools?

Thanks for reading.