I have the rule set up as follows, but the rule does not fire. rule file: package test import test.Field; rule "test date literal" when field : Field(dateValue >= "06-Nov-2005") then System.out.println("**Rule fired**"); end java class: package test; import java.util.Date; public Field { protected Date dateValue; public Date getDateValue() { return dateValue; } public void setDateValue(Date dateValue) { this.dateValue = dateValue; } } Before firing the rule, I assert the Field object as follows: ..... Field field = new Field(); SimpleDateFormat sf = new SimpleDateFormat("dd-MMM-yyyy"); field.setDateValue(sf.parse("06-Nov-2005)); workingMemory.assertObject(field); workingMemory.fireAllRules(); ..... I am using 4.0 MR2. Can anyone please let me know how to resolve this? Thank you.