How can I use the method callback.addEventListener() in the callback from web dynpro backend.

[former_member723012]

I write a htmlIsland in a web dynpro view. And I define a event named "Event".

I write "callback.fireEvent('Event','Hello Web Dynpro')" in the js file.

I want to know whether this Event completed.

Can I use the method callback.addEventListener() before I fire the event?

I tried it but it didn't work.