Fix storing of material-parameters with the "export code" option

Author: davidbhr

saenopy/gui/solver/modules/Regularizer.py

@@ -245,7 +245,7 @@ def code(my_reg_params1, my_reg_params2):  # pragma: no cover
 
             # iterate over all the results objects
             for result in results:
-                result.mesh_parameters = material_parameters
+                result.material_parameters = material_parameters
                 result.solve_parameters = solve_parameters
                 for index, M in enumerate(result.solvers):
                     # optionally copy the displacement field from the previous time step as a starting value