Unable to set property 'idd' of undefinded or null reference

I have got an error message with Grid/Tree when i am using EI10.
Code:


this.changeRowId=function(oldRowId, newRowId){
if (oldRowId == newRowId)
return;
",row.childNodes[i]); */
var row = this.rowsAr[oldRowId]
row.idd=newRowId;

	if (this.UserData[oldRowId]){
		this.UserData[newRowId]=this.UserData[oldRowId]
		this.UserData[oldRowId]=null;
	}

	if (this._h2&&this._h2.get[oldRowId]){
		this._h2.get[newRowId]=this._h2.get[oldRowId];
		this._h2.get[newRowId].id=newRowId;
		delete this._h2.get[oldRowId];
	}

	this.rowsAr[oldRowId]=null;
	this.rowsAr[newRowId]=row;

	[b]for (var i = 0; i < row.childNodes.length; i++)[/b]
		if (row.childNodes[i]._code)
			row.childNodes[i]._code=this._compileSCL(row.childNodes[i]._val, row.childNodes[i]);
			
	this.callEvent("onRowIdChange",[oldRowId,newRowId]);
}

Unfortunately the issue cannot be reproduced locally.
What version of dhtmlx do you have? Please, try to update it if it’s less than 3.5

If issue still occurs for you - pleas,e provide with any kind of sample of your code.