Add CKEditor controls to ASPX page dinamically

Hi,
I need to add some CKEditor controls dinamically to a aspx web page. I've tried but controls are not been shown.

CKEditorControl ckLong = new CKEditorControl();
ckLong.ID = "ckLongDescription";
ckLong.BasePath = "/ckeditor/";
ckLong.Toolbar = "Editor";
ckLong.FilebrowserBrowseUrl = "/Filemanager/index.html";
pDescription.Controls.Add(ckLong);