How to read a 'CompactSVMModel' saved in a .mat file from a C++/Qt program

I tried to save a machine learning model into a .mat file, and then read it from a Qt/C++ application. Following the documentation, I managed to read files containing basic types like double or int. As my model is of type 'classreg.learning.classif.CompactClassificationSVM', I wonder if it is still possible to read it.

As and example, i saved this iosnosphere model on matlab

load ionosphere
SVMModel = fitcsvm(X,Y,'Standardize',true,'ClassNames',{'b','g'})
CompactSVMModel = compact(SVMModel)
save("CompactSVMModel.mat", "CompactSVMModel")

I imported the relevant library in the CMakeLists.txt

find_package(Matlab "x.xx" EXACT COMPONENTS  "MX_LIBRARY" "MAT_LIBRARY" "DATAARRAY_LIBRARY" )
target_link_libraries(target PRIVATE Matlab::mat )

I used the "mat.h" library to open and read the data.

#include "mat.h"

int main () {
std::string stdFilename = "/filepath/CompactSVMModel.mat";
const char *variableName = "CompactSVMModel";

// Open the MAT-File
MATFile *matFile = matOpen(stdFilename.c_str(), "r");
if (!matFile) {
    qDebug() << "Error opening MAT file: " << stdFilename;
}
    
// Read the variable from the MAT-File
mxArray *dataArray = matGetVariable(matFile, variableName);
if (!dataArray) {
    qDebug() << "Error reading variable: " << variableName << " from MAT file: " << stdFilename;
}

...
// read a save the diffrent fields into containers
           
return 0; 
}

At the first if statement, matFile is NULL.