I don't understand the dynamics of B4XPages yet. In B4XPage2 I load a layout with a TabStrip1 with several pages and several B4XComboBox.SetItems (Lists) in it. When I return to B4XMainPage with back ... where should I refresh / reload the B4XComboboxes in the B4XPage2 ( B4XPage_Appear in Main refering Page2 before showing Page2 again or direct in Page2 )? Can someone please guide me ... I am really very grateful for orientations.