I'm trying to put together a POC using drools decision table in order to determine whether or not we will fully invest in the product. I am trying to set up a decision table that has a condition that iterates through values added to a cell. Under a CONDITION column I have a row with the name of the fact followed by a row that states the field name as well as the "in" syntax. I then use the "$paren" to indicate that I want to populate values from the cells beneath (listed here with values A, B, C) Policy policyType in ($param) "A", "B", "C" When I refresh the project with the spreadsheet I get a compiler error : Error: java.lang.NullPointerException If I try to run through the debugger, I can see a generated DRL with the syntax I am looking for: rule "somerule" when Policy(policyType in ("A", "B", "C")) then System.out.println("rule fired"); end What am I missing? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4212636#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...