Define Action in http output

By Action i mean SOAP Action like Create/Update/Delete

I tried my solution using SOAP UI that is working well.
I my case i need only POST data, so i am using http outpit

I want to incorporate same here with logstash http-output

I want to define the following stuff in my output config file

Endpoint
Username
Password
SOAP Request URL
Pass the variable value for sending the data to endpoint

I posted one more question in forum, but i ddint got any response so I proceeded with this
steps
This is previously posted question

Please let me know if we can do this?