TaskFactory REST Source - Token with embedded dot

I have a REST Source where one of the tokens in the Json result set contains an embedded dot (e.g. user.name). However when I add that to the Json Properties, it won't map the output to the input as it is dot walking the token and expecting "name" to be a child of "user" (e.g. "user":{"name":"data"}).

Is there a way to supply a token which contains an embedded dot or to reference the token by position as opposed to by name?

Thanks.