Hi haluk zorluoglu,
We cannot increase the number of ports in the function block. However, we can vectorize the input and enter it.
In other words, input signals of multiple elements are input together in a Mux block. Please check using the attached model.
However, Function block is not supported in the new MATLAB version. It is recommended to use the MATLAB Function block.
It is also specified in the release notes.
Regards,
stozaki