plot function in simulink

I have created a matlab function block, in simulink, with 3 inputs a, b, c, and one output Position. The code inside it is :

function Position = Plotter(a,b,c)
%#codegen
coder.extrinsic('plot');
plot3(a, b, c);
axis('equal');

It don't works when I run this model. Thanks for answers

Answer 1

[Azzi Abdelmalek]

coder.extrinsic('plot3')  % not 'plot'