can anyone help here please

Hello @jbiddulph

The problem is that you access the $course->en variabele that is delivered with the magic __get() function and directly change it.

What you can do is:

    $en =  $course->en;
    $en["config"]["coursesuite"] = $req->coursesuite;
    $en["config"]["coursename"] = $req->coursename;
    $en["config"]["courseid"] = $req->courseid;
    $en["config"]["lms"] = $req->lms;
    $en["config"]["defaultlang"] = $req->defaultlang;

    $course->en = $en;
    $result = $course->save();

    if($result) {
        return ["result"=>"Data is updated successfully"];
    } else {
        return ["result"=>"update operation failed"];
    }

With this method you get the variable, update it and then save it.