OLE2 causing trouble while removing .doc file.

Hi Experts,

I am not able to remove .doc file (from source folder) though it has nowhere being used/opened. I am using OLE2 & code is

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PROCEDURE test  (lr_fil_rec  IN  v_tm_fils%rowtype,
   lr_clt_rec  IN  fa_clt_mstr%rowtype,
   lr_order_rec IN   tm_orders%rowtype)
   IS
   words   ole2.obj_type;
   args      ole2.list_type;

BEGIN
  words:=ole2.create_obj('word.basic');
  args:=ole2.create_arglist;
  ole2.add_arg(args, :global.word_path || 'stamp' );

  ole2.invoke(words,'fileopen',args);
  ole2.destroy_arglist(args);

  /* class */
  pr_insert_text('[tm_fils.class]',TO_CHAR(lr_fil_rec.class),words);