Hi Marcin,

Both SendPostRequest and GetJWTToken send the HTTP POST request to the server, and they need to extract token from the response json. Providing SetJWTToken & GetJWTToken and example code are mainly for users to access JWT Token.

For SendPostRequest returning -10:
After user sets the JWT token string to the HTTP request header, when SendPostRequest sends a request but the token is invalid or expired, it returns -10. Other interfaces have corresponding return values too, such as Submit, SendGetRequest. You can refer to the online documents for more information:
https://docs.appeon.com/pb2021/powerscript_reference/SetJWTToken_func.html

For GetJWTToken returning -5:
This is a mistake in the document, GetJWTToken does not return -5. For its return value, you can refer to SendPostRequest. In the meantime, we will correct the document.

Regards,
Kai