How to clear the variables before closing a BSP MVC application

Question

I am calling a custom stateful BSP MVC application to display additional PO information as a popup window inside SAP BSP. When I close this popup window and open it later on a different PO, it still displays the old PO information. I am clearing the variables in the DO_HANDLE_EVENT. 
I am using the javascript
<htmlb:button id      = "Close"
                    text    = "Close window"
                    onClientClick="javascript:window.close()"  />
to close the window.
Could someone tell me what do I need to do before closing so that I can clear all the variables.

Answer 1

Hi Krishana,
Other neater way could be..
instead of calling java script.. raise a server event.. in DO_HANDLE_EVENT set a flag <b>lv_close_window</b> to 'X'.
on the page call the script to close the window if flag <b>lv_close_window</b> is set to 'X'.
just before setting rhe flag to 'X' you can clear all unnecessary data.
rememebr: javascript wont take you to DO_HANDLE_EVENT.
<htmlb:button id = "Close"
text = "Close window"
onClick="close_window" />
i would to this way if i am willing to go to DO_HANDLE_EVENT.
A.