[DecapitatedZombie]

Okay. So im trying to spawn a button in game that will open a door when you shoot it.
I spawn a button, set it's name to button.
Then I use ent_fire button addoutput OnTakeDamage minifinale_gate1 open
Is that the right format?

[Searcher64]

I would recommend using OnHealthChanged, and setting the ANIMATION to open. Although I'm not sure about this, try it