Insert new item in clientcode fails

[Jorgen Vester]

Hey

I show a list of values to the user. If the user types a value that's not in the list, it must be added to the list.

I try to do this in OnClientBlur with the following code. I start with insert at index = 0 as first step.

Next step is to add at the end of the list, but the code fails in the first step. I have attached a screendump of the error.

var items = sender.get_items();
alert('items.get_count():' + items.get_count());
sender.trackChanges();
var comboItem = new Telerik.Web.UI.RadComboBoxItem();
comboItem.set_text(value);
comboItem.set_value(value);
items.insert(0, comboItem);
sender.commitChanges();

[Jorgen Vester]

I found the error myself. The values are integers, and they are shown as text also. 
The error is caused by this and disappeared when I changed this: comboItem.set_text(value); ->
comboItem.set_text(value.toString());