Abstract: A method for updating an updateable event forwarding discriminator (UEFD) with a filter object. The filter object can be created and instantiated within the UEFD during continued operation of the UEFD. The method can further include the steps of defining a filter algorithm text string, incorporating the filter algorithm text string into a filter class template, and compiling the filter class template to create the filter object. The filter algorithm can be simple or complex. A preexisting filter object can be de-referenced immediately prior to instantiating the filter object. Provisions can be incorporated for automatically checking type and syntax of the filter algorithm text string to identify one or more errors and providing an output error signal in the case that the one or more errors are identified. The UEFD can incorporate multiple filter parameters. A method for managing at least one event forwarding discriminator is provided.