Ruby exception occurred: -1

[Mojster]

ruby {
		code => "
			a = event.get('message').split('|').delete_if{|x| !x.match(/=/)}
			a.each {|y| b = y.split('=', 2)
				event.set(b[0].strip, b[1])
			}
			event.set('acronym', event.get('acronym').upcase)"
	}

To explain my ruby code:

• I had problem with kv filter not splitting how it should, so I wrote my own splitter.
  This is explained here:
  How to handle '=' in values, splitting on | but KV takes over all '=' not only the first
• Also I've had problem with uppercase so I wrote my own upercase in ruby.