As of MATLAB R2023b there is no possible way to pass value into a parameter of a masked model with dimensions other than the one set initially.
Now, there is a work-around, you can create masked subsystems instead of masked models as they are more flexible with respect to parameter dimensions.
You can follow these steps to create one:
- Open a “Blank Subsystem”.
- Add all the necessary blocks and make the required connections.
- Right click and select Mask -> Create System Mask.
- Create the mask by defining your parameters.
- Now open your “MainModel” and add a “Subsystem Reference” block and reference your masked subsystem.
This will allow you to pass values with desired dimensions.
I have attached an example model that works for MATLAB R2022b that you can refer.
