How to use 'REQUEST' value on PL/SQL

Hi All,
I have assigned 'SEARCH' as button request to search button. I want to use this value in PL/SQL some thing like
IF REQUEST='SEARCH' THEN
--do something
ELSE
--do something else
END IF;
Can any one suggest how to access the 'REQUEST' value?
Thanks in advance.
Regards,
Hari

Hi rchalton!
Sorry for that. Here is an english document which also shows an example of how to use v('REQUEST') or :REQUEST.
[http://download.oracle.com/docs/cd/E14373_01/appdev.32/e11838/concept.htm]
regards
Edited by: Florian W. on 06.04.2009 15:35
I've also tried to translate this link from german into english with google and it worked very good.

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