Hi everyone , as the Subject say im working with two value list inside my ultragrid, one of then has static values that i set on the load event and the other one will take its values depending on the value selected on the first one , they are my columns "Type" and "Subtype" im trying to do that using the "after cell list close up" even of the ultragrid(not sure if its the righ one) i have the next code on said event:

            ValueList lista = new ValueList();
           
            switch (e.Cell.SelText)
            {
               
                case "Factura":
                    lista.ValueListItems.Add(1, "Factura");
                    lista.ValueListItems.Add(2, "Adelanto");
                    lista.ValueListItems.Add(3, "Avance");
                    lista.ValueListItems.Add(4, "Retencion");
                    break;
                case "Intereses":
                    lista.ValueListItems.Add(1, "Interes");
                    break;
                case "Letra de Cambio":
                    lista.ValueListItems.Add(1, "Letra de Cambio");
                    break;
                case "Nota de Débito":
                    lista.ValueListItems.Add(1, "Nota de Debito");
                    break;
                case "Otro Débito":
                    lista.ValueListItems.Add(1, "Otro Debito");
                    break;

            }
            UGridDetalle.DisplayLayout.Bands[0].Columns["Subtipo"].ValueList = lista;

and its working just fine except that it also trigger when the user select any value on the subtype and i want it to trigger only when the user select a value from the type list, i have tired using activerow to select the header or something to be able to know whats the source of my event but i havent been able to find a way