Through Enhancement, how to call a Webdynpro method from another webdynpro?

I have a standard page with 2 iViews with a standard abap webdynpro in each.
The first webdynpro needs to refresh the second webdynpro.
Through enhancement, I tried to follow the solution below:
first of all in the child component's component controller method(which you want to expose to another component) must be checked in the interface column.
Double click on the webdynpro project(parent component)->In the used components tab, in the column of component type the child project name(whose method you want to call) and in component usage column give any name->save the project.
goto the controller(VIEW or COMPONENT) from where you want to call the method->click create controller usage->select the interface controller of the child component->save the project.
click the code wizard->select method call in used controller->select the child component interface controller ->select the method you want to call.
Link of thread: Calling a method of other webdynpro component
But this solution doesn't worked because in this standard webdynpro is not possible to check the method as Interface.
Is there other way to do this?
Thanks.

Hello,
you can refer the following documentation for portal eventing
http://help.sap.com/saphelp_nw70/helpdata/en/f6/7d6f4151dc5758e10000000a1550b0/frameset.htm
Br, Saravanan

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