[rules-dev] Handling Dynamic Input Data Behaviour

Is there any way to circumvent the constraint that only getter methods can be called from the asserted bean object? If the input data is dynamic in nature and instead I capture it in a HashMap, then how can I retrieve specific key-value pairs in the "when" block of a Rule? Basically, I need to utilize a method, in the bean, which would have a definition like: <code> public String getValue(String sKey){ return (String)hmpData.get(sKey); } </code> Can this getValue method be accessed by the "when" block? If no, then can someone let me know which class in the source I might have to tweak to extract a similar behavior from the engine? Thanks a lot! Anirvan