a system and method for establishing associative relationships between properties of a contained object and corresponding parameters of a container application is disclosed herein . the present system contemplates the establishment of both mutual and unilateral associative relationships , with a particular relationship being specified via a user interface created upon instantiation of the contained object . such associative relationships may be advantageously established without modification of the code comprising the contained object . in one aspect the present system facilitates implementation of selected functionality of a container application prescribed by an event script . in this context an association is created between an event arising within a contained object instantiated in a computing environment and a script associated with the container application . an event indication is generated in response to occurrence of a particular event within the contained object . in response , the event script is invoked and a sequence of script commands corresponding to the selected functionality are carried out . in another aspect the present system provides a system and method for creating an association between a tag source of a container application and a property of a contained object . specifically , an associative relationship is defined between the tag source and the property , such associative relationship being determinative of the extent to which changes in the tag source and property will induce corresponding changes in the other .