A mechanism to dynamically vary the amount of delay for an event-generated function call is discussed. The event causing the generation of the function call may be a signal-based event, function call event or some other type of event. A function call generating delay component is inserted into a DES model and dynamically adjusts the amount of delay to apply prior to generating and transmitting the function call to an intended target component. The function call generating component reads a value from an input port in determining the amount of delay. The identified value at the input port may be a signal value or an attribute associated with an event entity received at the port.