OnTriggerEnter2D problem on created collider2d and rigidbody2d during runtime

Hello! Noob here I just wanted to ask if what I'm doing is possible, I created a RigidBody2D and EdgeCollider2D on OnEnable() and at the same class there's a OnTriggerEnter2D and I don't know if I did something wrong or it's just not possible?

Here's my code hope it helps and thanks!:

 void OnEnable(){
 Rigidbody2D _edgeRigidBody = _edgeColliderContainer.AddComponent<Rigidbody2D> () as Rigidbody2D;
         _edgeRigidBody.gravityScale = 0;
         _edgeColliderContainer.name = "TestCollider";
         _edgeColliderContainer.transform.position = gameObject.transform.position;
         EdgeCollider2D _edgeCollider = _edgeColliderContainer.AddComponent<EdgeCollider2D> () as EdgeCollider2D;
         _edgeCollider.isTrigger = true;
 }
 
 void OnTriggerEnter2D(Collider2D _Collider){
 Debug.Log("Testing");
 }