Oracle APEX + AJAX character coding -

I am trying to pass text code as a parameter using htmldb_get . Unfortunately, when I am updating or inserting rows, the accented characters like é will result in the result in the database, Ê . I am developing this application only for the firm so that there will be no help in changing the established database or Apex properties.

JS code:

  var ajaxRq = new htmldb_Get (zero, & amp; APP_ID, 'APPLICATION_PROCESS = updateCategory', 0); AjaxRq.addParam ('X01', 'E'); AjaxRes = ajaxRq.get ();