That was fast!!
Thank you Ankit and Otto.
Jesus
Yes you can, but you do that in Simulation Center see Simulation Center—Importing and Exporting.
Otto
Yes, you can still generate simulation executables. You will find this option after simulating the model then selecting File -> Export -> Simulation Executable in Simulation Center.
Please check this documentation: https://reference.wolfram.com/system-modeler/UserGuide/SimulationCenterImportingAndExporting.html