[rules-users] matches / not maches

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