how can i clear the editable grid

hi,

i'm using clearGrid method to clearing the grid...
but i'm using also editableGrid...
and i cannot editting anymore after i've called the clearGrid() method
because this method includes the clearCellModel()

how can i edit the grid after clear the grid (rows and all data)

thanx

var Flx1 = new AW.Grid.Extended;
Flx1.setFixedLeft(1);
with (Flx1){
    setId('Flx1');
    setColumnCount(2);
    setHeaderText(['COL1','COL2','COL3']);
    setColumnWidth([100,100,100]);
    setColumnIndices([1,2]);
    getCellTemplate(1).setStyle('text-align', 'right');
    getCellTemplate(2).setStyle('text-align', 'center');
    setCellEditable(true, 1)
    setCellEditable(true, 2)
}
Flx1.onHeaderClicked = function(event, index){return true;}

    function clearGrid(obj){
     with(obj){
         clearCellModel();
            clearRowModel();
     clearScrollModel();
     clearSelectionModel();
            setSortProperty("direction", "none");
     clearSortModel();
     refresh();
     }
    }

clearCellModel() resets all cell properties, including cellEditable, so you have to call setCellEditable(true) again.