Hey.. 
I have encountered a problem using the 'maches' operator in drool.. I wanna write something like this (just made a simple example)
 
rule "Hello World"
    when
    m: Message("5" matches "5")
    then
        System.out.println("Test");
end

But eclipse tells me " '"5" ~= "5"' must be an boolean expression ", and i get an runtime error if i try to run it.. However if I use 'not matches' it works! Forcing me to do something like this:

    when
    not m: Message("5" not matches "5")
    then


Any ideas how to fix this? 
- Thanks! 

-- 
Peter