onEditCell not allowing change

I have a grid with editable cells and checkboxes. I have attached both an “onEditCell” event which fires correctly but doesn’t allow change even if I return true. I have also attached an onCheck event which never fires. What am I doing wrong.

Here is a simplified version of my code, to give you something reproducible.

<html>
<head>
	<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
	<link rel="STYLESHEET" type="text/css" href="dhtmlxgridv51/codebase/dhtmlxgrid.css">
	<link rel="STYLESHEET" type="text/css" href="dhtmlxgrid/dhtmlxgrid.css">
	<link rel="stylesheet" type="text/css" href="dhtmlxgrid/skins/dhtmlxgrid_dhx_skyblue.css">
</head>
<body onload="doInitGrid()" ">
    <div id="content">
		
					
        <div id="mygrid_container" style="width:2000px;height:200px"></div>
    </div>
	
    <script src="dhtmlxgridv51/codebase/dhtmlxgrid.js"></script>

    <script>

        var mygrid;
        function doInitGrid(){
	        mygrid = new dhtmlXGridObject('mygrid_container');
            mygrid.setImagePath("dhtmlxgridv51/codebase/imgs/");
            mygrid.setHeader("Name,Days,Est Start,Locked");
			mygrid.attachHeader("#text_filter,#text_filter,#text_filter,#text_filter");
			mygrid.setInitWidths("90,50,80,50");
			mygrid.setColAlign("left,right,left,center");
			mygrid.setColSorting("str,str,dateSort,str");
			//set all columns to read only
			mygrid.setColTypes("ro,ed,dhxCalendarA,ch");
			mygrid.setColumnIds(",days,eststart,locked");
			mygrid.enableAutoWidth(true);  
			mygrid.attachEvent("onRowDblClicked", onClickOpen); 
			mygrid.attachEvent("onDrag", onDragRecalculate); 
            mygrid.setSkin("light");
			mygrid.enableDragAndDrop(true); 
			mygrid.enableEditEvents(true,false,false);
			mygrid.setDateFormat("%m/%d/%Y");
			
            mygrid.init();
			data={
				rows:[
					{ id:1, data: ["Smith, John", "2", "10/10/2017", "0"]},
					{ id:2, data: ["Jones, Sam", "3", "10/12/2017", "0"]},
					{ id:3, data: ["Walters, Jane", "4", "10/15/2017", "0"]}
				]
			};
			mygrid.parse(data,"json"); 
			mygrid.attachEvent("onEditCell", function(stage,rId,cInd,nValue,oValue){
				onChangeTest(stage,rId,cInd,nValue,oValue);
			});
			  
			mygrid.attachEvent("onCheck", function(rId,cInd,nValue) {
				onCheckLocked(rId,cInd,nValue);
			});
			
			
        }			
		
		
		function onChangeTest(stage,rId,cInd,nValue,oValue)  {
			//alert ("rID: " + rId + ", cInd: " + cInd + ", nValue: " + nValue + ", oValue: " + oValue);
			return true;
		}
		
		function onCheckLocked(rId,cInd,nValue)  {
			return true;
		}
		
		function onClickOpen(rId)  {
		}
		
		function onDragRecalculate(sId,tId,sObj,tObj,sInd,tInd)  {
		}

	</script>
	
	
</body>

Please, try to return true from your onEditCell event:
mygrid.attachEvent(“onEditCell”, function(stage,rId,cInd,nValue,oValue){
onChangeTest(stage,rId,cInd,nValue,oValue);
return true;
});

Thank you, that worked.