How to get x2fx as a function suitable for mat lab coder?

I am trying to get the x2fx of matrixA. When using Matlab coder, it says that x2fx is not supported for standalone code generation. So I decided to write a separate function that produces the x2fx according to the number of columns in matrixA.

I want to be able to produce the x2fx of up to 3 columns in matrixA.

During my testing, my matrixA is set as 9 by 2. When I tried to convert my function using the matlab coder, I get an error saying "Index expression out of bounds. Attempted to access element 3. The valid range is 1-2."

It seems my if-else function did not work. I even tried using case-switch, but the same thing happened. My matrixA is a variable that can change. It is only 9x2 for testing purposes. How can I get rid of this error?

if NumofColumns==2
      QuadDesignMatrix = zeros(NumofRows,6);
      for ii = 1:NumofRows
          x1=matrixA(ii,1); 
          x2=matrixA(ii,2);
          QuadDesignMatrix(ii,:) = [1 x1 x2 x1*x2 x1^2 x2^2];
      end
      return
elseif NumofColumns==3
      QuadDesignMatrix = zeros(NumofRows,10);
      for ii = 1:NumofRows
          x1=MatrixA(ii,1); 
          x2=MatrixA(ii,2);
          x3=MatrixA(ii,3);
          QuadDesignMatrix(ii,:) = [1 x1 x2 x3 x1*x2 x1*x3 x2*x3 x1^2 x2^2 x3^2];
      end
      return
else
      error=1;
end