1. In an electronic device, a method of representing a model, comprising: providing a representation of the model in the form of a flexible object representation, the flexible object representation having at least one variable property and at least one common property; and simulating a dynamic process involving the model wherein a value of the at least one variable property changes during simulation and a value of the at least one common property does not change during simulation; wherein a different occurrence of the model is provided with each value of the at least one variable property without creating an additional business object representation of the model.