I am trying to create a gantt chart, and would want groupedColumns with month spanning the dates of the month.
I tried to concat and push a AdvancedDataGridColumnGroup onto groupedColumns, it only worked with push, it adds to the array, but doens't update the display of the ADG. adg.groupedColumns.push( new AdvancedDataGridColumnGroup(monthNames[date.getMonth()])); (monthNames is an array of strings of month names) I tried running adg.invalidateDisplay() and reset the dataprovider groupingCollection source and it still didn't update. Is there a way to programatically create these columns or do you have to do it with the mxml? Thanks.
