Create wp_editor with ajax call

Hi,

I am working on admin interface which have multiple wp_editor and we can add or remove an textarea.

When i load the page, i have a list of textareas with editors. When i click the add button, i call admin-ajx.php which call this function :

function ajax_create_settings_field_slider_image(){
		$nonce = $_POST['nonce'];

		if (!wp_verify_nonce($nonce, 'ajax-nonce'))
			die ('Error!');

		if (current_user_can('edit_theme_options')) {
			// Create editor
			if (isset($_POST['id']) && isset($_POST['option_name']) && isset($_POST['name']) && isset($_POST['index'])) {
				echo wp_editor('', 'custom-editor-' . $_POST['index'], array(
					'media_buttons' => FALSE,
					'textarea_name' => $_POST['option_name'] . '[' . $_POST['name'] .'][text][]',
					'textarea_rows' => 5,
					'wpautop' => FALSE
				));
			}
		}
		exit;
	}

And this my Javascript Code :

jQuery.ajax({
						type: 'POST',
				        dataType: 'HTML',
				        url: url,
				        data: {
				        	'action': 'create_settings_field_slider_image',
				        	'limit' : limit,
				        	'id' : id,
				        	'option_name' : option_name,
				        	'name' : name,
				        	'index': nextId,
				        	'nonce' : nonce
				        },
				        success:function(data){
				            // Prepare parent and add data
							parent.find('.buttonAdd').hide();
							parent.find('.buttonDelete').show();
							parent.append(jQuery(data).html());

							tinyMCE.execCommand('mceAddControl', false, 'custom-editor-' + nextId);
				        },
						error: function(errorThrown){
							alert("Une erreur est apparue pendant l'ajout des nouveaux champs de saisies");
			         	}
				    });

Ajax call works fine, but my new editor don’t work, my TinyMCE buttons are not displayed, and when i click on Text or Visual link i have TinyMEC errors like : this.getDoc(…) is undefined, z is undefined

I try many things on my javascript like :

//init quicktags
				            quicktags({id : 'custom-editor-' + nextId});
				            //init tinymce
				            tinymce.init(tinyMCEPreInit.mceInit['custom-editor-' + nextId]);

but it’s never work.

Anyone can help me ?

Thanks