Hi, I am writing a rule which checks for the presence of substring in a string. Hard coding rule works fine but if I am using variables which may have dynamic values giving problems. How to write code equivalent of hardcoding version. HardCode verson : ------------------- rule "Process 834" no-loop when m: Message( fileName matches "^.*ABC-834.*$") then System.out.println( "Reading Rule for 834 ..." ); m.setFromQ("ABC.834.EDI"); m.setToQ("ABC.834.XML"); m.setProcess("834"); update( m ); end Dynamic Version: //fileName has data 'ABC-834-test-100.edi' // p.FILEMASK has data 'ABC-834' ---------------- rule "Process ALL" no-loop when p: TransactionVO() m: Message( fileName matches p.FILEMASK) // I can't say as (matches "^.*"+p.FILEMASK+".*$") //the above st should be like if fileName has FILEMASK in it then System.out.println( "Reading Rule for ..." + p.NAME ); m.setFromQ(p.FROM_Q); m.setToQ(p.TO_Q); m.setProcess(p.TRANS_TYPE); update( m ); end -- View this message in context: http://www.nabble.com/Drools-Pattern-Matching-tp16442998p16442998.html Sent from the drools - user mailing list archive at Nabble.com.