DDE.INITIATE problem in FORMS4.5

Hi,

   i met a problem about DDE in FORMS4.5.

  i put these procedure calls in trigger ...            

        1      declare
        2          appid  PLS_INTEGER;
        3           convid   PLS_INTEGER;
        4      begin
        5               appid := DDE.App_Begin('C:\EXCEL\EXCEL.EXE
C:\TEMP.XLS');
        6               convid:=DDE.initiate('excel','c:\temp.xls');
        7       end;
            


----------------------------------------------------------------------------


------------------------

it worked fine when begins the DDE server application program by line 5, but when opens a DDE conversation with the DDE server application in line 6,
it showed the error message as followed:  

                         FRM-40735: PRE-FORM trigger raised unhandled
                         exception ORA-106556

is there any one can tell me how to solve this problem? thanks

         jeng e-mail : kdjeng_at_ms5.hinet.net                                       Received on Mon Jul 28 1997 - 00:00:00 CEST