problem with sender and listener example....

hi everyone,

i had developed two iview with individual applications of one webdynpro project....

i.e example program i had done..

sender and listener example...

everything i done currectly.... even i am not performign the action...

that example is with portal eventing...

when i click on the show button nothing is happening... i am sure that i added action to that button...in which i will fire the corresponding action...

i added created a page and added two iview to that...

and i am opening the page and clicking the preview button...

wat might me the problem...