apply Parameter Changes
If a RVParameterSetter has been created based on a model, then this method can be used to apply changed parameters to the model. The primary use of the function occurs in the setUpExperiment() function of the model. If the model has a RVParameterSetter then it is used to apply any potential parameter changes to the model automatically prior to running the experiment. This method could be used at any time to change the parameters of the model; however, changing the parameter setting during the execution of a model is highly discouraged. The parameter changes ensure that the underlying random number stream remains the same.
Return
the number of parameterized random variables that had their parameters changed in some way