Is there a simplified way of mapping than what i have done??? Java function : function boolean checkIfVia(Route route, String locationCode) { if(route != null) { Via[] viaArr = route.getViaArray(); for(int i=1; i < viaArr.length; i++) { if(viaArr[i].getLocation().equalsIgnoreCase(locationCode)) return true; else return false; } } return false; } Dsl Mapping: [keyword][][Ff][Uu][Nn][Cc] [Cc][Hh][Ee][Cc][Kk][Ii][Ff][Vv][Ii][Aa]=function boolean checkIfVia(Route route, String locationCode)\n{checkIfViaBody} [keyword][]checkIfViaBody=\nif(route != null)\n{checkIfViaIfBlock}\nreturn false;\n [keyword][]checkIfViaIfBlock=\nVia[] viaArr = route.getViaArray();\nfor(int i=1; i < viaArr.length; i++)\n{checkIfViaForBlock}\n [keyword][]checkIfViaForBlock=\nif(viaArr[i].getLocationCode().equalsIgnoreCase(locationCode))\n return true; \nelse \nreturn false;\n ----- Thanks, Bala -- View this message in context: http://drools.46999.n3.nabble.com/Clarification-needed-in-writing-DSL-fun... Sent from the Drools: User forum mailing list archive at Nabble.com.