The onchange event of the TuniFormattedNumberEdit class is not executed correctly. Look at the demo app i have attached to this post. In the form there are 4 components. One is a TuniFormattedNumberEdit component. The value of the component is changed in the form.oncreate event. When the focus is moved into the component the onchage event is executed. It's shouldn't. This doesn't happens for the TuniNumberEdit class. IMPORTANT: Use the tab key to change the focus. t