How & Where Assign & Pass Request in package application

Question

hi friends,
i am using package application to learn more about apex.here i have face some problems ,
On page no 1, there are an intractive report,but it shows only Customer Name, Referencable, Users, Summary, Web Site, Category ,Status column in intractive report but there are more column in Report Attributes ,
Plese tell me how does developer hide the unnessary column in intractive report on page no 1.
2nd Problem is,
i am not getting how & where developer assign & pass request LAST_PAGE_VISITED .Developer create an processes name Load Data on page no 1
if :REQUEST = 'REPORTS' then
:LAST_PAGE_VISITED := 20;
else
:LAST_PAGE_VISITED := 30 ;
end if;
i am not getting the meaning of this code and where developer pass and assign this Request.
What are the role of this code.
My Login Details
Workspace-->customertraker
username-->[email protected]
password-->piwufo
Application --> 2923
Thanks
Manoj

Answer 1

i just need to have my message be dynamic. However, i am not using validation.xml.
i can either use
in My actionClass.java, i am using
}ResourceBundle res = ResourceBundle.getBundle("struts/resource/MessageResource");
                                                 res.get("message.notify")     
                  //Is it possible to set the value of {0} from here on my resource.properties?
           or in my JSP
  <fmt:message key="message.notify"/>Thank you