Want to get the Client Machine name from Oracle Forms

Hi,
I want to get the Client machine name from the Oracle Forms.
I have attached web_util.pll.
I use user_name := webutil_clientinfo.get_host_name;
but i am getting following error - WebUtil Error:WUC-015: Your form must contain the following Bean for this function to be available: oracle.forms.webutil.clientinfo.GetClientInfo.
Can any one help me in this!
Thanks & Regards,
Avinash Bhamare.
Pune.

Hi,
I have written the code on when-button-pressed trigger of a push button -
DECLARE
user_name VARCHAR2(50);
BEGIN
user_name := client_win_api_environment.get_computer_name;
message('user_name is :'||user_name);
message('user_name is :'||user_name);
END;
And on clicking on this button i am getting error -
frm-40734:Internal Error:PL/SQL error occurred
Can any one help in this asap please!
Thanks & Regards,
Avinash.

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