Lives bring down too fast

I’ve written a script in order to lower a life for every collision with a trigger but when the player enters to a trigger the lives bring down extremely fast.

The scrip that i`ve written is that:

var Vida = 3;

function OnTriggerEnter2D (collision : Collider2D)
if( == ("Finish"))
Vida -= 1; 

Which is the mistake?

PD: I also want to lower a life when colliding with an specific tag, not a name, but I don’t know what I have to write…

Thank You

Hi, it lowering super fast because it’s executed every frame it’s touching.
There had been tens of similar cases, please try google searching before asking:

And to check tag, create a new tag in tags list first, and in code it’s something like this.

if(collision.tag == "Finish"){

To create tag: