We can modify both and at run time, we change the material properties once the mesh has been created. All you need to do is to select -> from the menu bar. After you select this option, you only need to click on any boundary you need to edit. You will see a dialog window like Figure 4.2, “Editing material properties”.
It is straightforward to edit material properties using this window. Please note to include a trailing ';' character for each entry.