How to transfer “trasfer function” from simulink to matlab

Hello guys I need an advice. As you can see in the picture I have transfer function which I want to transfer to matlab workspace. Parameters are set to a1 = 1, a2 = 10, K = 5.

In "matlab function" block I have code which is below. The code will transfer my "transfer function" into the matlab as a constant (Just one number). But I would like to that it would transfer as individual parameters. So it should return me back same parameters which I set in the beginning (a1 = 1, a2 = 10, K = 5). Can anyone help me?

function tfout  = fcn(tfin)
%#codegen
coder.extrinsic('evalin', 'assignin')

tfout=tfin;           

assignin('base','tfout',tfout); % Assign value back to workspace