Prodataset: Add-buffer method.

HI  All,

   I am trying to create an dynamic prodataset program in client/server mode.

   I pass dataset as input-output dataset-handle, at server side

   I just use ADD-BUFFER method of prodataset.code is

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some code here

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  CREATE DATASET hdataset.
CREATE TEMP-TABLE hTemptable.
hTempTable:CREATE-LIKE("customer").
CREATE DATA-SOURCE hDataSource.
CREATE BUFFER hbuffer FOR TABLE ictable.

htemptable:ADD-FIELDS-FROM(hbuffer).

hDataset:ADD-BUFFER(htemptable).
CREATE QUERY hquery.
  hquery:ADD-BUFFER(hbuffer).
   hquery:QUERY-PREPARE("for each " + icTable).
   hDatasource:QUERY = hquery.
   hDataSource:ADD-SOURCE-BUFFER(hbuffer,"").
   hdataset:GET-BUFFER-HANDLE(1):Attach-data-source(hDataSource).
   BUFFER ttcust:BATCH-SIZE = 20.
   IF inrowid <> ? THEN
       hdatasource:RESTART-ROWID = inrowid.
   hdataset:FILL().

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some code

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when I try to  run this program

ADD/SET-BUFFERS argument 1 was invalid or not found. (7319).

but it works proper when I use

hDataset:ADD-BUFFER(buffer ttcust:handle).

where ttcust is static temptable.

Please suggest.

Thanks

vishwdeep