Currently, InvokejQueryFunction can only return a string, which is not good when a jQuery functon being called returns something other than a string, the data returned is useless - see: http://www.telerik.com/forums/getting-non-string-values-back-from-invokejqueryfunction It would be REALLY nice if this call could return an object, or something other than a string - as in the example in the above forum post shows a jQuery function returning an array.