Construction Group Parameters of type Matrix - values are not persistent

amnonjwamnonjw Member Posts: 7


I reported in the past an issue with Lumerical and model parameter of type matrix: after simulation run the matrix value was nulled - it became became of dimension 0 (not the number 0); the parameter value became null. If I took such a ftp file after simulation, and then "return to layout mode" and re-run the simulation - then the IDE would crash.

This issue was reported in the old Lumerical Knowledge Exchange forum, and the post didn't pass on to this forum for reference. Kyle Johnson was PoC. In any case, you resolved the issue about 5 months ago.

I now report that this issue persists with a matrix parameter of a structure group. I attached simulation files (before and after running). The image below shows that the parameters of type matrix are nulled after the simulation run.

In short:

  • The fsp file has matrix parameters in both the main "model" object and an inner structure group named "Holes".
  • The model setup script takes values from its matrix parameters and passes them to matrix parameters in the structure group "Holes"
  • After simulation run, the values of the matrix parameters of the model are persistent, but those of the structure group are nulled.
  • If I have a sub-structure group inside a structure group - then its matrix parameters are also null after simulation. The issue aggregates.


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