Consumption of odata service through mbo

hi,

i m trying to consume odata service through mbo following the guide (http://scn.sap.com/docs/DOC-33172/diff?secondVersionNumber=4), but i am getting an error while testing the service in preview  as "The request URI is not valid. The segment 'EmployeeSet' refers to an entity set and not to a single entity'".

thanks