A method in a communication system wherein a requestor (18) signals a request (1) for a service associated with an event. The request includes a first identifier for identifying the requested event and a second identifier for identifying the origin of the event. An executable set of instructions is then selected based on the first and second identifiers. Communications associated with the specific event is then controlled by means of the selected executable set of instructions. A communication system and a service execution entity (12) operating in accordance with the method is also disclosed.