I have a custom content type with a field (id is field_link_to_persona) that is multi-valued text. In my UI I have checkboxes that correspond to values in that field and if I uncheck the box and save I want to remove the value from the field.

I load the node like this:

$  nodes = \Drupal::entityTypeManager()             ->getStorage('node')             ->loadByProperties(['type' => 'document', 'nid' => $  docID ]);              $  node = reset($  nodes); 

I can add new values like this:

$  node->field_link_to_persona[] = $  newValue; 

But how do I remove one? I tried

$  node->field_link_to_persona->removeItem($  id); 

But I keep getting exceptions about the index not existing.

Any help would be appreciated. I’m somewhat new to drupal so no detail is too trivial 🙂