setNumberFormat not works with parse loaded grid

I have a grid that loads the data using a parse jsarray.

I have tried to apply a number format but i does not works.

<script type="text/javascript">
    feesData = [[ "", "Ponente", 2, 0, 0, 0, 2 ],
                      [ "", "Prensa", 0, 0, 0, 0, 0 ],
                      [ "Profesionales", "Socio", 0, 1, 0, 0, 1 ],
                      [ "Profesionales", "No Socio", 0, 0, 0, 0, 0 ],
                      [ "Estudiantes", "Socio", 0, 0, 0, 0, 0 ],
                      [ "Estudiantes", "No Socio", 0, 0, 0, 0, 0 ],
                      [ "Total",   " ", 2, 1, 0, 0, 3 ]];
	sColumnsCaption = 
                      "Grupo," +
                      "Descripción," +
                      "Pagado," +
                      "No pagado," +
                      "Anulado," +
                      "Invitado," +
                      "Total";

	sColumnsWidth	= "*,*,100,100,100,100,100";
	sColumnsAlign = "left,left,right,right,right,right,right";
	sColumnsType = "ro,ro,ro,ro,ro,ro,ro";
	sColumnsSorting = "str_custom,str_custom,int,int,int,int,int";

	feesGrid = new dhtmlXGridObject('feesBox');
	feesGrid.setImagePath("http://localhost:8888/myCongress_v5/ProjectSources/v5b.201006/Fonts/myCongress/resources/js/dhtmlxGrid/imgs/");
	feesGrid.setHeader(sColumnsCaption);
	feesGrid.setInitWidths(sColumnsWidth);
	feesGrid.setColAlign(sColumnsAlign);
	feesGrid.setColTypes(sColumnsType);
	feesGrid.setColSorting(sColumnsSorting);
	feesGrid.enableMultiselect(true);
	feesGrid.setNumberFormat("0.000,00", 2, ",", ".");
	feesGrid.init();
	feesGrid.setSkin("dhx_skyblue");

	feesGrid.parse(feesData,"jsarray");
	feesGrid.groupBy(0, ["#title","","#stat_total","#stat_total","#stat_total","#stat_total","#stat_total"]);
	feesGrid.collapseAllGroups();
	</script>

To set number format necessary column should has “ron” or “edn” type.