Help with calling Navigate function of Web Browser

Hi there,
  I have imported Web Browser activeX component into my Oracle Forms 5.0. I am able to go to a web site using a call as follows:

DECLARE
  HeaderData OleVar;
  FileData Varchar2(20000);
BEGIN FileData := 'USERID=BILL&QUERY_TYPE=COMMITMENT_HISTORY';

INTERNETEXPLORER_IWEBBR_3.Navigate(:item('BLOCK3.ACTIVEX_CONTROL4').interface, 'http://www.netscape.com', OleVar_Null,
OleVar_Null, OleVar_Null, OleVar_Null);

END;
However, when I want to pass FileData as the 5th argument, which is of type OleVar, I do not know how to convert this FileData as OleVar and yuse it in the function Navigate.

Any help will be highly appreciated.
Pramod
pramod.mahadev_at_ustra.mail.abb.com

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