Resolved How do I check the position of an object? / ¿Como compruebo la posición de un objeto?

I know it must be a very easy thing, and I came up with some ideas but they didn't work, I'm new.
I want to check the position of an object, that is, if such object is in x position, so a thing happens.
(sorry the english)

Sé que debe ser algo muy fácil, y se me ocurrieron algunas ideas pero no funcionaron, soy nuevo.
Quiero comprobar la posición de un objeto, es decir, si tal objeto está en x posicion, que pase tal cosa.

 

There is something like this (very crude example):

Code (CSharp):

1. [SerializeField] float Vector3 targetPosition;
2.  
3. void Update() {
4.     bool closeEnough = Mathf.Approximately(targetPosition.x, transform.position.x)
5.         && Mathf.Approximately(targetPosition.y, transform.position.y)
6.         && Mathf.Approximately(targetPosition.z, transform.position.z);
7.     if (closeEnough) {
8.         Debug.Log("I was close enough!");
9.     }
10. }

 

Thank you so much!

 

use a trigger