Re: [rules-users] Is it possible to leave the "then" block empty?

How? When I try something like this: rule "AttributeChange EAttribute id" when diff: IDiff( operationType == OperationType.ADD, differenceType == DiffType.ATTRIBUTE, parameter=="id", !oldValue.equals(newValue) ) end I get the following error: Error: [12,0]: [ERR 102] Line 12:0 mismatched input 'end' in rule "AttributeChange EAttribute id" Error: [0,0]: Parser returned a null Package Also I get an error when I try to use something like this: rule "AttributeChange EAttribute id" when diff: IDiff( operationType == OperationType.ADD, differenceType == DiffType.ATTRIBUTE, parameter=="id", !oldValue.equals(newValue) ) then end Error: Rule Compilation error : [Rule name='ReferenceChange EClass add Attribute/Reference'] Can you give me an example? On May 21, 2013, at 7:07 PM, Wolfgang Laun wrote: