Validation in drools

Question

This is the second part of my drools validation question. First part has been already answered and proposed solutions has been implemented in my code. First Part

This is

Answer 1

rule "Check Details"
when
  details:FinanceDetails  (itemValue == 'LAND' || == 'Building')
  address:PersonAddress(status == AddressStatus.CURRENT,
                 type == AddressType.PHYSICAL,
                 useType == AddressUseType.HOME,
                 ownerShipType == "Own" )
then
  modify(details){itemValue=//set your value};
end