Dear Sirs:
I have an issue trying to use the POST Text API to get a response from an IBM Watson service.
The issue seems to be in the format of the data sent as a text to the service.The IBM service needs it to be in json format but the POST file API in AI2 sends it as plain text. althought the way data is constructed follow a json format,

Can you please give a suggestion on how to properly send a data segment for a POST API call in json format?
I have used POSTMAN tool to test the argument used in my AI2 code and they worked fine just becasue data is declared as application/json format.
I found out another question about the same topic where this very same problem in AI2 was not solved at that time.
I look forwar for your help and comment.
Sincerely
Daniel Suzuki