Java Development Tools

Hi Everyone,

Im using Jdev 11G.

i have 10 pages linked with task flows(unbounded). All pages contains tables from VOs.
while navigating between pages for suppose if i go from page 3 to page 4 then the data in page4 contains the previous navigation data.
im passing parameters and executing all the pages with different parameters. if the parameter dont have value then the page 4 should not show any values in the tables but
its showing previous data.

How can i clear the page previous values while loading the page?

Plz help me to get out of this.

Thanks in advance.