Ajax MutuallyExclusiveCheckBoxExtender with CheckBoxList

[Tamer Ibrahim]

Hi,
This is the error message I got when I'm trying to extend a'CheckBoxList1'
with 'MutuallyExclusiveCheckBoxExtender1' which I understand it is not
possible.
How can I make it possible?
Thank you in advance.

Extender control 'MutuallyExclusiveCheckBoxExtender1' cannot extend
'CheckBoxList1'. Extender controls of type
'AjaxControlToolkit.MutuallyExclusiveCheckBoxExtender' cannot extend
controls of type 'System.Web.UI.WebControls.CheckBoxList'