XML filled Combox in Grid

Hi,

I hope someone can help me with this, cause i’m stuck.

I have a Grid that is initialized like this:

function doInitGrid(){
mygrid = new dhtmlXGridObject(‘mygrid_container’);
mygrid.setImagePath("’.LINK_ROOT.‘partners/Traffic Builders/Website images/dhtmlx_imgs/");
mygrid.setHeader("’.substr($csv_headers,0,-1).’");
mygrid.setInitWidths(“30,,,,,,”);
mygrid.setColAlign(“left,left,left,left,left,left,left”);
mygrid.enableCSVAutoID(false);

    //mygrid.attachEvent("onRightClick", function(id,ind,obj){
	//	alert("rowId:"+ id+" - ColId:"+ ind);
	//
    //	return true;	
    //}
    //);
    
    mygrid.setSkin("ri");
    mygrid.enableMultiselect(true);
    mygrid.setColSorting("str,str,str,str,str,str,str");
    mygrid.setColTypes("ch,ed,co,co,co,co,co");			    
    
    '.$js_sbv_dom_countries.'
    '.$js_sbv_lang.'
    '.$js_sbv_country.'
    
    mygrid.getCombo(6).put(\'N\',\'N\');
    mygrid.getCombo(6).put(\'Y\',\'Y\');
    
    
    var width = $("#mygrid_container").parent().width();
	$("#mygrid_container").css("width",width+"px");

    mygrid.enablePaging(true,10,5,"recinfoAreaPaging",false,"stats");
    mygrid.setPagingSkin("toolbar", "dhx_blue");

    mygrid.attachHeader("#master_checkbox,#text_filter,#select_filter,#select_filter,#select_filter,#text_filter,#select_filter");
    mygrid.attachEvent("onEditCell", function(stage,rId,cInd,nValue,oValue){	    
    	if(cInd==5 && stage==1){
    		alert("Ready for edit");
    		
    		/*loading from xml*/
			/*
			var comboObject2 = {
			    parent: "combo_zone2",
			    width: 200,
			    readonly: false,
			    xml: "'.LINK_ROOT.'modules/Project/Resources/GoogleCityList_nl.xml"
			}
			var combo2 = new dhtmlXCombo(comboObject2);
			*/
			
			var combo = mygrid.getCustomCombo(rId,cInd);
			alert(combo);
			combo.loadXML("'.LINK_ROOT.'modules/Project/Resources/GoogleCityList_nl.xml","");
    		

    	}
    });
    
    mygrid.init();

    //mygrid.setColumnHidden(0,true)
    
    mygrid.csv.row = "\n";
	mygrid.csv.cell = ";";
				
	
	mygrid.setColumnIds("checkbox,keyword,se_from,search_lang_in,search_lang_from,locations,active");

	
	var csvstr = "'.str_replace("\"","\\\"",$csv_data).'";
	mygrid.parse(csvstr,"csv");

	//used just for demo purposes;
	//============================================================================================;
	myDataProcessor = new dataProcessor("dynamicBlocks/editKeywordUpdate.php?domain_id='.$_REQUEST["domain_id"].'");
	//lock feed url;
	myDataProcessor.setTransactionMode("POST", true);
	//set mode as send-all-by-post;
	myDataProcessor.setUpdateMode("off");

	myDataProcessor.enableDataNames(true);
	
	//Columns that can trigger an update
	myDataProcessor.setDataColumns([true,true,true,true,true,true,true,true]);
	
	//define the custom logics
	//myDataProcessor.defineAction("update",updated);
	//myDataProcessor.defineAction("insert",inserted);
	myDataProcessor.defineAction("save_error_tag",save_error);			
	
	
	myDataProcessor.attachEvent("onFullSync",function(){
	   alert("Done updating.");
	   //mygrid.clearAll();
	})

	
	//disable auto-update;
	myDataProcessor.init(mygrid);
	//link dataprocessor to the grid;
	//============================================================================================;
	
	/*
	$("img.button_icon").bind("click", function(e){
		var obj = $(this);
		var par = obj.parent();
		var id = $("[name=profileId]", par).val();

		action = function() {
			action = null;
			return {
				profileId: id
			};
		}

		if($(this).attr("name")=="removeProfile"){
			var answer = confirm("'.translate('removeProfile').'")
			
			if(answer==true)dynamicBlockLoader.createRequest($(this).attr("name"));
			else dynamicBlockLoader.createRequest(\'listProfiles\');
			
		}else dynamicBlockLoader.createRequest($(this).attr("name"));
	});
	*/
	
	//mygrid.enableAlterCss("even", "uneven");			
	
}		
doInitGrid();  	

});

Now I want to add a combox that is filled automatically when editcell is clicked depending on the value of the cell next of it.
The problem is that when im in the event of editcell and I want to fill the combobox with combo.loadXML is says that combo.loadXML is not a function.

And this is truth I think cause this object has no function loadXML, but how can I resolve this?