RadAutoCompleteBox - provide entries in page load - no postback

Ivan..thank you for responding.

I followed the documentation and have run into an issue.

i get the error message "The server method 'GetCompnayNames' failed.".

Here is my aspx code.  I tried playing with the web service path.  I put the fully qualifed path and other combinations.

<telerik:radautocompletebox runat="server" id="RadAutoCompleteBox1" onclientrequesting="requesting"><WebServiceSettings Path="/sites/M4/_layouts/my.websrv/Data.asmx" Method="GetCompanyNames" /></telerik:radautocompletebox>

Questions:

1. Is the error related to the web service path?  (web service and calling webpart are in the site collecton).

2. How do i get the actual text from radautocomplete? 

i.e context["ClientData"] = RadAutoCompleteBox1.Text?