Im using the CCTK_ParameterSet function to change a parameter, but after calling it the parameters value doesn change?
First make sure that you really want to change a parameters value and that you really know what you are doing. In general parameters are fixed thoughout a run, and should only be changed by steering thorns. If you change a parameter with CCTK_ParameterSet it won’t change in the routine you call it from, because the DECLARE_CCTK_PARAMETERS macro currently expands to define all a thorns parameters as local variables with a const qualifier (in C) and sets them to the current values of the parameters. Thus calling CCTK_ParameterSet will not affect the value of the local copy.
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