getting response when using AXFetchAsSregTransform behavior in dotnetopenauth

I am using AXFetchAsSregTransform behavior in DotNetOp开发者_JAVA技巧enAuth and thereafter using

ClaimsRequest( Email = DemandLevel.Request,
                FullName = DemandLevel.Request)

I am using

var claimsResponse = response.GetExtension<ClaimsResponse>();

to receive response. It's working fine with Google, but in case of AOL, MyOpenID it is returning null. How should solve this problem.