1. In a graphical modeling environment having at least one model with a plurality of executable time-based components and which provides a view of the model, a method, comprising the steps of: monitoring the execution of said model to determine the occurrence of a specified event, said event referenced by a label; determining the occurrence of said specified event during the execution of said model; and posting the occurrence of said event in said graphical modeling environment to an event handler, said posting notifying said event handler of the occurrence of said event; and executing at least one component from said plurality of components in response to said notifying, said component associated with said label.