Button only works once

Hello! I've made a function that makes to read a "document", getting the child objects from where the button is, and putting those texts to show. But when I click the document it shows well, but only ONCE!

For example, if I have 2 documents in my inventory, I only can read the first one I click, and when I click another document, it still shows the info about the first one I clicked.

Here's my code that reads documents:

 public void ReadClickedDocument()
     {
 
         Component[] components;
         components = GetComponentsInChildren<Text>();
 
         //The child #0 of the prefab will contain the title of the document, the next one the body.. etc.
         _documentTitle.text = components[1].GetComponent<Text>().text.ToString();
         _documentBody.text = components[2].GetComponent<Text>().text.ToString();
 
         
     }

And this is the code that adds the function to the instantiated button:

 newbuttonToInst.GetComponent<Button>().onClick.AddListener(() => { ReadClickedDocument(); }); //Set the function to read the document