Drop message if two fields contain equal value

[skinner]

I am trying to drop an entire message if two fields contain the same value.
Would it be possible with pipeline rules? What would be an example to so?

[tmacgbay]

rule "There can be -- only one"
when
  to_string($message.my_field) == to_string($message.your_field)
then

 drop_message();

end

[skinner]

@tmacgbay
Thanks! That worked.

[tmacgbay]

Great! Mark as answer if you have a chance!