I'm trying to use a script to build a Simulink model with a "Matlab Function Block" in it. The methodhere works great to make the block. I want to use Parameter inputs to load data files into the function that only need to be loaded at the begnnning of the simulation. To do this, I use "Parameter" inputs to the function. The methodhere works to make inputs defined in the script as Parameters. However, I need to make these parameters non-tunable in order for the model to be able to run properly, but the default is for them to be tunable. I can't find any method in the Stateflow.EMChart object for the block or the Stateflow.Data object for the parameter itself that will let me disable that option.