How can I create new events in ruby filter?

I want to create new events from the existing one. I'd rather not create, compile and install a new filter if possible rather I'd like to use a ruby filter, e.g.

        code => '
            host_list = event["hostList"]
            # create new event for each host
            host_list.each do |host|
                new_event = event.clone
                # add/remove stuff from new_event
                yield new_event #FAILS! yield called out of block

I understand why the yield fails but I don't know how to make the new event show up in rubydebug codec. Any help appreciated.


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Just saw this:

You need to resort to a custom filter for this (you can't call yield from a ruby code filter which is what's needed to generate new events).

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