Hi tikkiew ,

As shown in the documentation, you must set the Accept header with a value of application/json.

Sorry I am novice. And I don't know at all what that means. Can't find it in the documentation. Are you talking about the callback parameter?

If someone can make a working example on yahoo.pipe. This would also help. Or I will ask this on the yahoo.pipe discussion forum for help. How to set accept header. But currently I can't access somehow that forum.

Are you talking about the callback parameter?

No. The Accept header is a HTTP header that is required in the actual request. It is not a HTTP parameter.

I am not clear on how to use Yahoo Pipes with a custom header but it definitely looks like it's possible. Here, and here seem to indicate some use with custom headers.