If I use this code ckeditor does not appear

              $value = 'categories_description_' . $languages[$i]['id'] . '[' . $languages[$i]['id'] . ']'; // ====> here ==> categories_description_[1]
              echo HTMLOverrideAdmin::textAreaCkeditor($value, 'soft', '750', '300', (isset($categories_description[$languages[$i]['id']]) ? str_replace('& ', '& ', trim($categories_description[$languages[$i]['id']])) : $CLICSHOPPING_CategoriesAdmin->getCategoryDescription($cInfo->categories_id, $languages[$i]['id'])), 'id="' . $value . '"'); ?>

===> result example : <textarea name="categories_description_1[1]" id="categories_description_1[1]" />

If I use this code ckeditor appear

          $value = 'categories_description_' . $languages[$i]['id']; /// ===> here  ==> categories_description_1
          echo HTMLOverrideAdmin::textAreaCkeditor($value, 'soft', '750', '300', (isset($categories_description[$languages[$i]['id']]) ? str_replace('& ', '& ', trim($categories_description[$languages[$i]['id']])) : $CLICSHOPPING_CategoriesAdmin->getCategoryDescription($cInfo->categories_id, $languages[$i]['id'])), 'id="' . $value . '"'); ?>

I do not understand why we can not use an array inside the script ckeditor. I need to display ckeditor for multilanguage approach

categories_description_[1] ... categories_description_[2] allow to save my data inside my db in function of the language.

example of the js (not work) with categories_description_1[1] :

ClassicEditor
    .create(document.querySelector('#categories_description_1[1]') , {
        toolbar: ['heading', '|', 'bold', 'italic', 'link', 'bulletedList', 'numberedList', 'imageUpload', 'ckfinder', 'blockQuote', 'insertTable', 'mediaEmbed', 'undo', 'redo', '|', 'help']
    } )

example of the js (work) with categories_description_1 :

ClassicEditor
    .create(document.querySelector('#categories_description_1[1]') , {
        toolbar: ['heading', '|', 'bold', 'italic', 'link', 'bulletedList', 'numberedList', 'imageUpload', 'ckfinder', 'blockQuote', 'insertTable', 'mediaEmbed', 'undo', 'redo', '|', 'help']
    } )

thank you.