Calling a Simulink Function which accesses root I/O directly in an MATLAB Function is not supported for AUTOSAR code generation!!

I am trying to generate AUTOSAR-based code from a model that C code is generated from it without any problem using Embedded Coder.

To do that I have switched from Embedded Coder to AUTOSAR-Blockset and then everything is configured automatically.

After clicking on Generate Code button the following error was observed which says accessing I/O directly from a Simulink Function that is called by a MATLAB Function is not supported for AUTOSAR code generation ( note that simulation works fine ).

Now my question is how to overcome this issue and what alternatives are available.