How do I define symblic variable in a subfunction in matlab? Getting: “Attempt to add ”bar“ to a static workspace.”

I'm trying to define a symbolic variable in a sub function foo (see below)

function [ ] = test2( )

();

     function [] = foo ()
         syms bar;
     end

end

I get the following error and am not sure how I can resolve this:

EDU>> test2 Error using assignin Attempt to add "bar" to a static workspace. See MATLAB Programming, Restrictions on Assigning to Variables for details.

Error in syms (line 66) assignin('caller',x,sym(x));

Error in test2/foo (line 6) syms bar;

Error in test2 (line 3) foo();

Would appreciate any help to sort out the above

Answer 1

[Walter Roberson]

bar = sym('bar');

[Bogdan -Ervin]

Do you know the syntax which works for Matlab R2023b?

[Walter Roberson]

bar = sym('bar');