Getting 401 error with mobbage, for request values that works in Postman

[avatarsol]

Hello, I am trying to submit mobbage test, based on the following work file:
[{
"url": "http://myIP:myPort/api/myMethod", "count": 100, "method": "GET",
"header": ["resource_id:10000", "Cookie:"Authorization=\"Bearer my_bearer_data\"""]
}]
that I run with mobbage -V -f filename.json
Requests are sent, but all end up with 401 error.
Call with an identical URL and two header key values above retrieves relevant data, when initiated by Postman. What am I missing?
Thanks in advance. Miomir

[avatarsol]

Any help, please? Sending plain data works, but sending JSON (by escaping double quotes in header or body, as in siege) doesn't seem to work. Thanks