When building data objects using Data Object Wizard default setting for package is Simulink. There are only two options in the selection: Simuink, mpt. Is there any way to use custom package for data object?
I understand that you may want to create custom storage classes using packages other than 'Simulink' or 'mpt'. Based on the workflow, I recommend you another tool "Custom Storage Class Designer". For more details about this tool, please refer to the following link: