title: How to interact with the value of a Slider in Sailfish Silica / QML?
body: <p>I seem to be totally lost in the declaration of forms in QML. I have a C++ object with properly set Q_PROPERTies, I have access to an object of that class in the QML, and I want to use sliders in the QML. How exactly do I make the value of the Slider update the information of the properties in the object, and vise-versa?</p>