set uitable property everytime?

Do I have to set uitable properties everytime I call function?(ColumnWidth...ColumnName)..

        function HistoricalTabButtonDown(app, event)
              app.DateSearchDropDown_3.Items=string(app.Eq.MinCap_posSiz.DateRicalcolo(end)); 
            app.UITable_Historical_3.Data=Table_Historical_Struct(app.Eq,app.Sis,app.DateSearchDropDown_3.Value);
                  app.UITable_Historical_3.ColumnWidth= {30,300,50,50,50};
                  app.UITable_Historical_3.ColumnName = {"#","A","B","C","D"};
        end
        
        function DateSearchDropDown_3Clicked(app, event)
               item = event.InteractionInformation.Item;
               if ~isempty(item)
                  app.UITable_Historical_3.Data=Table_Historical_Struct(app.Eq,app.Sis,app.DateSearchDropDown_3.Value);   
                  app.UITable_Historical_3.ColumnWidth= {30,300,50,50,50};
                  app.UITable_Historical_3.ColumnName = {"#","A","B","C","D"};
               end  
        end

Answer 1

[Rik]

You only need to set properties if you want to change them, or if you want to ensure they have a specific value.

This is true for all normal Matlab objects with properties.