Reading structure fields string array of a Matlab struct in C++

Hi,

i call a matlab dll function from my C++ code using Qt libraries. A function output is

mwArray p_function_out

In Matlab it is a structure with following fields:

sts
sing
msg() % array of 2 strings

For example:

function [vx_sts, data] = fcn(p1, p2)
    
    ... % function code
    data = ...
        
    % at the end for example
    vx_sts.sts = -1;
    vx_sts.sing = -101;
    vx_sts.msg(1) = "err sts";
    vx_sts.msg(2) = "err sing";
end

I'm trying to assign the fields of

mwArray p_function_out

to C ++ variables. For the two numeric fields I have no problem but I can't read the string array:

 /* Qt C++ code */
    std::shared_ptr<mwArray> p_function_out = std::make_shared<mwArray>();
    std::shared_ptr<mwArray> my_data = std::make_shared<mwArray>();
    
    int x1 = 3;
    int x2 = 5;
    mwArray p1((mxDouble)x1);
    mwArray p2((mxDouble)x2);
    fcn(2, *p_function_out, *my_data, p1, p2);        
    int my_sts, my_sing;
    my_sts = static_cast<int>(p_function_out.Get("sts", 1, 1).Get(1, 1));
    my_sing = static_cast<int>(p_function_out.Get("sing", 1, 1).Get(1, 1));

    /* until here everthing works fine */
    
    QString my_msg[2];
    my_msg[0] = (p_function_out.Get("msg", 1, 1).Get(1, 1)).ToString(); // i get an exception
    my_msg[1] = (p_function_out.Get("msg", 1, 1).Get(1, 2)).ToString(); // i get an exception

can anyone help me please?

Thank You