[1.19.4, SOLVED] Custom death message for custom weapon

[LeeCrafts]

I would like to modify the death message for a custom weapon I implemented (e.g. "X was squashed into a pancake by Y" instead of "X was slain by Y"). Is it required that I create a new DamageSource? If not, what else can I do?

Edit: The answers in the post below really helped me.

 

Edited November 24, 2023 by LeeCrafts

[Luis_ST]

You have to create a new DamageSource