Adding multiple event handlers in .net

I am trying to add more than one Event handler to the editor in the code behind using vb.net.

Problem is, that when I am trying to add more than one, only the first handler is added to the control. In the example below, the only handler on the control is 'blur' and 'key' is not added.

rxtBodyHTML.CKEditorInstanceEventHandler = New System.Collections.Generic.List(Of Object)()
rxtBodyHTML.CKEditorInstanceEventHandler.Add(New Object() {"blur", "function (evt){checkCKDataChanged(evt);}"})
rxtBodyHTML.CKEditorInstanceEventHandler.Add(New Object() {"key", "function (evt){checkCKDataChanged(evt);}"})

Has anyone had success in adding multiple event handlers in .net?

Thanks.