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Last item in tree not checked

Hello,

I'd to like to set the check boxes of the country tree back to what it was before the user submitted a form and presses the back button. The javascript function that is called manages this for every country, except for the last one in the list.

I've built in some alerts to see the output and the setCheck for the last country is being performed, but the alert with "is id checked" then returns undefined. If I add another node (by checking its checkbox) after the last checked node, then this new node is not checked when returning after submission.

The country's abbreviation is unique and used as ID of the tree.

Here's the javascript code of the function that sets the checkboxes:

    function updatecountrycheckednodes(request) {
        if (request.readyState == 4) {
            if (request.status == 200) {
            
                var selection = request.responseText;
                if (selection != null && selection != "" && selection != "\n" && selection != "\r\n") {
                
                    alert (selection);
                    var countries = selection.split(",");
                    
                    var firstId = "";
                    
                    for (var i = 0; i < countries.length; i++) {
                    
                        var id = countries[i];
                        alert("countries[" + i + "] = " + countries[i]);
                        if (id != "") {
                            if (firstId == "")
                                firstId = id;
                            ctree.setCheck(id,1);
                            alert("is id " + id + " checked: " + ctree.isItemChecked(id));
                        }
                    }
                    if (firstId != "") ctree.focusItem(firstId);
                }
            } else {
                alert('There was a problem with the request.');
            }
        }
        return true;
    }

Regards,
Theo

Thanks for your answer. I already found out that the response always contains a linefeed at the end, and that was part of the id I was trying to set the checkbox with.

Cheers, Theo