'wn' is inferred as a variable-size matrix, but its size is specified as inherited or fixed.

I built the model in SIMULINK according to MATLAN code, expecting to get Verilog. But putting the code into the MATLAB Function module generates an error.The code is an algorithm for an LMS filter.

'wn' is inferred as a variable-size matrix, but its size is specified as inherited or fixed. Verify 'wn' is defined in terms of non-tunable parameters, or select the 'Variable Size' check box and specify the upper bounds in the Size box.

I have tried the relevant error correction, but could not solve the problem.