AsyncFileUpload created dynamically

I would like to create my AsyncFileUpload control dynamically in code behind and for the most part everything works well. However, one crutial part is missing. Intellisence doesn't give me the ability to add "OnUploadComplete" and when I force it, it complains saying "OnUploadComplete" is 'Protected'. Intellisence gives me 'OnClientUploadComplete' and everything else, but no 'OnUploadComplete'. So, how do I call my subroutine when AJAX uploads the file?

Thanks for any and all help!