[EDITED]
I am not sure but you can try this.
After changing the parameter in workspace you can give model update command to make changes effective. To update the model simply press Ctrl+D or use
set_param('YourModel','SimulationCommand','update')
It will update the parameter values in the model and download the parameters to your application. Before that Make sure that "Batch Download" option is ON. You can do it by
set_param('YourModel','ExtModeBatchMode','on');
Please let me know if it works.
